author | alanb |
Sun, 15 Feb 2009 12:25:54 +0000 | |
changeset 2057 | 3acf8e5e2ca0 |
child 3065 | 452aaa2899fc |
permissions | -rw-r--r-- |
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/* |
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* Copyright 2008-2009 Sun Microsystems, Inc. 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. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package sun.nio.fs; |
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|
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import java.nio.file.attribute.*; |
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import java.util.*; |
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import java.util.concurrent.TimeUnit; |
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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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/** |
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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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|
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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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|
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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 = DOS_XATTR_NAME.getBytes(); |
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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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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 Object getAttribute(String attribute) throws IOException { |
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if (attribute.equals(READONLY_NAME)) |
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return readAttributes().isReadOnly(); |
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if (attribute.equals(ARCHIVE_NAME)) |
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return readAttributes().isArchive(); |
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if (attribute.equals(SYSTEM_NAME)) |
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return readAttributes().isSystem(); |
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if (attribute.equals(HIDDEN_NAME)) |
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return readAttributes().isHidden(); |
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return super.getAttribute(attribute); |
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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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|
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@Override |
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public Map<String,?> readAttributes(String first, String[] rest) |
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throws IOException |
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{ |
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AttributesBuilder builder = AttributesBuilder.create(first, rest); |
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DosFileAttributes attrs = readAttributes(); |
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addBasicAttributesToBuilder(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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|
115 |
if (builder.match(ARCHIVE_NAME)) |
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|
116 |
builder.add(ARCHIVE_NAME, attrs.isArchive()); |
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|
117 |
if (builder.match(SYSTEM_NAME)) |
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|
118 |
builder.add(SYSTEM_NAME, attrs.isSystem()); |
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|
119 |
if (builder.match(HIDDEN_NAME)) |
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|
120 |
builder.add(HIDDEN_NAME, attrs.isHidden()); |
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121 |
return builder.unmodifiableMap(); |
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122 |
} |
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|
123 |
|
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|
124 |
@Override |
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|
125 |
public DosFileAttributes readAttributes() throws IOException { |
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|
126 |
file.checkRead(); |
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|
127 |
|
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128 |
int fd = file.openForAttributeAccess(followLinks); |
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|
129 |
try { |
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|
130 |
final UnixFileAttributes attrs = UnixFileAttributes.get(fd); |
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|
131 |
final int dosAttribute = getDosAttribute(fd); |
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|
132 |
|
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133 |
return new DosFileAttributes() { |
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|
134 |
@Override |
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|
135 |
public long lastModifiedTime() { |
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|
136 |
return attrs.lastModifiedTime(); |
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|
137 |
} |
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|
138 |
@Override |
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|
139 |
public long lastAccessTime() { |
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|
140 |
return attrs.lastAccessTime(); |
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|
141 |
} |
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|
142 |
@Override |
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|
143 |
public long creationTime() { |
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|
144 |
return attrs.creationTime(); |
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|
145 |
} |
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|
146 |
@Override |
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|
147 |
public TimeUnit resolution() { |
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|
148 |
return attrs.resolution(); |
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|
149 |
} |
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|
150 |
@Override |
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|
151 |
public boolean isRegularFile() { |
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|
152 |
return attrs.isRegularFile(); |
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|
153 |
} |
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|
154 |
@Override |
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|
155 |
public boolean isDirectory() { |
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|
156 |
return attrs.isDirectory(); |
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|
157 |
} |
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|
158 |
@Override |
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|
159 |
public boolean isSymbolicLink() { |
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|
160 |
return attrs.isSymbolicLink(); |
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|
161 |
} |
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|
162 |
@Override |
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|
163 |
public boolean isOther() { |
3acf8e5e2ca0
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|
164 |
return attrs.isOther(); |
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|
165 |
} |
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|
166 |
@Override |
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|
167 |
public long size() { |
3acf8e5e2ca0
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|
168 |
return attrs.size(); |
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|
169 |
} |
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diff
changeset
|
170 |
@Override |
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|
171 |
public int linkCount() { |
3acf8e5e2ca0
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diff
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|
172 |
return attrs.linkCount(); |
3acf8e5e2ca0
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|
173 |
} |
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parents:
diff
changeset
|
174 |
@Override |
3acf8e5e2ca0
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diff
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|
175 |
public Object fileKey() { |
3acf8e5e2ca0
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diff
changeset
|
176 |
return attrs.fileKey(); |
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parents:
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changeset
|
177 |
} |
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parents:
diff
changeset
|
178 |
@Override |
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|
179 |
public boolean isReadOnly() { |
3acf8e5e2ca0
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|
180 |
return (dosAttribute & DOS_XATTR_READONLY) != 0; |
3acf8e5e2ca0
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parents:
diff
changeset
|
181 |
} |
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parents:
diff
changeset
|
182 |
@Override |
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diff
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|
183 |
public boolean isHidden() { |
3acf8e5e2ca0
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parents:
diff
changeset
|
184 |
return (dosAttribute & DOS_XATTR_HIDDEN) != 0; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
185 |
} |
3acf8e5e2ca0
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parents:
diff
changeset
|
186 |
@Override |
3acf8e5e2ca0
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diff
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|
187 |
public boolean isArchive() { |
3acf8e5e2ca0
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parents:
diff
changeset
|
188 |
return (dosAttribute & DOS_XATTR_ARCHIVE) != 0; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
189 |
} |
3acf8e5e2ca0
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parents:
diff
changeset
|
190 |
@Override |
3acf8e5e2ca0
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parents:
diff
changeset
|
191 |
public boolean isSystem() { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
changeset
|
192 |
return (dosAttribute & DOS_XATTR_SYSTEM) != 0; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
193 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
194 |
}; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
195 |
|
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
196 |
} catch (UnixException x) { |
3acf8e5e2ca0
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parents:
diff
changeset
|
197 |
x.rethrowAsIOException(file); |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
198 |
return null; // keep compiler happy |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
199 |
} finally { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
changeset
|
200 |
close(fd); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
201 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
202 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
203 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
204 |
@Override |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
changeset
|
205 |
public void setReadOnly(boolean value) throws IOException { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
206 |
updateDosAttribute(DOS_XATTR_READONLY, value); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
207 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
208 |
|
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
209 |
@Override |
3acf8e5e2ca0
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parents:
diff
changeset
|
210 |
public void setHidden(boolean value) throws IOException { |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
211 |
updateDosAttribute(DOS_XATTR_HIDDEN, value); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
212 |
} |
3acf8e5e2ca0
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parents:
diff
changeset
|
213 |
|
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
214 |
@Override |
3acf8e5e2ca0
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parents:
diff
changeset
|
215 |
public void setArchive(boolean value) throws IOException { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
changeset
|
216 |
updateDosAttribute(DOS_XATTR_ARCHIVE, value); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
217 |
} |
3acf8e5e2ca0
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parents:
diff
changeset
|
218 |
|
3acf8e5e2ca0
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parents:
diff
changeset
|
219 |
@Override |
3acf8e5e2ca0
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parents:
diff
changeset
|
220 |
public void setSystem(boolean value) throws IOException { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
221 |
updateDosAttribute(DOS_XATTR_SYSTEM, value); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
222 |
} |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
223 |
|
3acf8e5e2ca0
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parents:
diff
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|
224 |
/** |
3acf8e5e2ca0
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diff
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|
225 |
* Reads the value of the user.DOSATTRIB extended attribute |
3acf8e5e2ca0
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parents:
diff
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|
226 |
*/ |
3acf8e5e2ca0
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parents:
diff
changeset
|
227 |
private int getDosAttribute(int fd) throws UnixException { |
3acf8e5e2ca0
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parents:
diff
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|
228 |
final int size = 24; |
3acf8e5e2ca0
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parents:
diff
changeset
|
229 |
|
3acf8e5e2ca0
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diff
changeset
|
230 |
NativeBuffer buffer = NativeBuffers.getNativeBuffer(size); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
changeset
|
231 |
try { |
3acf8e5e2ca0
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parents:
diff
changeset
|
232 |
int len = LinuxNativeDispatcher |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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parents:
diff
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|
233 |
.fgetxattr(fd, DOS_XATTR_NAME_AS_BYTES, buffer.address(), size); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
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234 |
|
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if (len > 0) { |
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// ignore null terminator |
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if (unsafe.getByte(buffer.address()+len-1) == 0) |
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len--; |
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239 |
|
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// convert to String and parse |
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byte[] buf = new byte[len]; |
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unsafe.copyMemory(null, buffer.address(), buf, |
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Unsafe.ARRAY_BYTE_BASE_OFFSET, len); |
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String value = new String(buf); // platform encoding |
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245 |
|
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// should be something like 0x20 |
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if (value.length() >= 3 && value.startsWith("0x")) { |
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try { |
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return Integer.parseInt(value.substring(2), 16); |
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} catch (NumberFormatException x) { |
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// ignore |
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} |
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253 |
} |
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254 |
} |
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throw new UnixException("Value of " + DOS_XATTR_NAME + " attribute is invalid"); |
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} catch (UnixException x) { |
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// default value when attribute does not exist |
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if (x.errno() == ENODATA) |
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return 0; |
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throw x; |
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261 |
} finally { |
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buffer.release(); |
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263 |
} |
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264 |
} |
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265 |
|
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266 |
/** |
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* Updates the value of the user.DOSATTRIB extended attribute |
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268 |
*/ |
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private void updateDosAttribute(int flag, boolean enable) throws IOException { |
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270 |
file.checkWrite(); |
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|
271 |
|
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272 |
int fd = file.openForAttributeAccess(followLinks); |
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273 |
try { |
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274 |
int oldValue = getDosAttribute(fd); |
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int newValue = oldValue; |
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276 |
if (enable) { |
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newValue |= flag; |
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278 |
} else { |
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newValue &= ~flag; |
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|
280 |
} |
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281 |
if (newValue != oldValue) { |
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|
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byte[] value = ("0x" + Integer.toHexString(newValue)).getBytes(); |
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|
283 |
NativeBuffer buffer = NativeBuffers.asNativeBuffer(value); |
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|
284 |
try { |
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|
285 |
LinuxNativeDispatcher.fsetxattr(fd, DOS_XATTR_NAME_AS_BYTES, |
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|
286 |
buffer.address(), value.length+1); |
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|
287 |
} finally { |
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|
288 |
buffer.release(); |
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|
289 |
} |
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|
290 |
} |
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|
291 |
} catch (UnixException x) { |
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|
292 |
x.rethrowAsIOException(file); |
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|
293 |
} finally { |
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|
294 |
close(fd); |
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|
295 |
} |
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|
296 |
} |
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|
297 |
} |