Github user aledsage commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/896#discussion_r39995087
--- Diff:
utils/common/src/main/java/org/apache/brooklyn/util/io/FilePermissions.java ---
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2015 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.brooklyn.util.io;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.attribute.PosixFileAttributeView;
+import java.nio.file.attribute.PosixFilePermission;
+import static java.nio.file.attribute.PosixFilePermission.GROUP_EXECUTE;
+import static java.nio.file.attribute.PosixFilePermission.GROUP_READ;
+import static java.nio.file.attribute.PosixFilePermission.GROUP_WRITE;
+import static java.nio.file.attribute.PosixFilePermission.OTHERS_READ;
+import static java.nio.file.attribute.PosixFilePermission.OTHERS_WRITE;
+import static java.nio.file.attribute.PosixFilePermission.OTHERS_EXECUTE;
+import static java.nio.file.attribute.PosixFilePermission.OWNER_READ;
+import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
+import static java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE;
+import java.util.EnumSet;
+import java.util.Set;
+import org.apache.brooklyn.util.os.Os;
+
+/**
+ * Portable file permissions.
+ *
+ * @author Ciprian Ciubotariu <[email protected]>
+ */
+public class FilePermissions {
+
+ private final int posixMode;
+ private final Set<PosixFilePermission> posixPermissions =
EnumSet.noneOf(PosixFilePermission.class);
+
+ public FilePermissions(int posixMode) {
+ this.posixMode = posixMode;
+ if ((posixMode & 0400) != 0) posixPermissions.add(OWNER_READ);
+ if ((posixMode & 0200) != 0) posixPermissions.add(OWNER_WRITE);
+ if ((posixMode & 0100) != 0) posixPermissions.add(OWNER_EXECUTE);
+ if ((posixMode & 0040) != 0) posixPermissions.add(GROUP_READ);
+ if ((posixMode & 0020) != 0) posixPermissions.add(GROUP_WRITE);
+ if ((posixMode & 0010) != 0) posixPermissions.add(GROUP_EXECUTE);
+ if ((posixMode & 0004) != 0) posixPermissions.add(OTHERS_READ);
+ if ((posixMode & 0002) != 0) posixPermissions.add(OTHERS_WRITE);
+ if ((posixMode & 0001) != 0) posixPermissions.add(OTHERS_EXECUTE);
+ }
+
+ public void apply(File file) throws IOException {
+ Path filePath = file.toPath();
+
+ // the appropriate condition is actually
Files.getFileStore(filePath).supportsFileAttributeView(PosixFileAttributeView.class)
+ // but that downs performance to ~9000 calls per second
+
+ boolean done = false;
+ try {
+ // ~59000 calls per sec
+ if (!Os.isMicrosoftWindows()) {
+ Files.setPosixFilePermissions(filePath, posixPermissions);
+ }
+ done = true;
+ } catch (UnsupportedOperationException ex) {}
+
+ if (!done) {
+ // ~42000 calls per sec
+ // TODO: what happens to group permissions ?
+ boolean setRead =
file.setReadable(posixPermissions.contains(OTHERS_READ), false) &
file.setReadable(posixPermissions.contains(OWNER_READ), true);
+ boolean setWrite =
file.setWritable(posixPermissions.contains(OTHERS_WRITE), false) &
file.setWritable(posixPermissions.contains(OWNER_WRITE), true);
+ boolean setExec =
file.setExecutable(posixPermissions.contains(OTHERS_EXECUTE), false) &
file.setExecutable(posixPermissions.contains(OWNER_EXECUTE), true);
--- End diff --
This ignores if it was 700 or 600.
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