Github user abhishekagarwal87 commented on a diff in the pull request:
https://github.com/apache/storm/pull/1053#discussion_r52417035
--- Diff:
storm-core/src/jvm/org/apache/storm/container/cgroup/core/DevicesCore.java ---
@@ -0,0 +1,185 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.storm.container.cgroup.core;
+
+import org.apache.storm.container.cgroup.CgroupUtils;
+import org.apache.storm.container.cgroup.SubSystemType;
+import org.apache.storm.container.cgroup.Device;
+
+import java.io.IOException;
+import java.util.List;
+
+public class DevicesCore implements CgroupCore {
+
+ private final String dir;
+
+ private static final String DEVICES_ALLOW = "/devices.allow";
+ private static final String DEVICES_DENY = "/devices.deny";
+ private static final String DEVICES_LIST = "/devices.list";
+
+ private static final char TYPE_ALL = 'a';
+ private static final char TYPE_BLOCK = 'b';
+ private static final char TYPE_CHAR = 'c';
+
+ private static final int ACCESS_READ = 1;
+ private static final int ACCESS_WRITE = 2;
+ private static final int ACCESS_CREATE = 4;
+
+ private static final char ACCESS_READ_CH = 'r';
+ private static final char ACCESS_WRITE_CH = 'w';
+ private static final char ACCESS_CREATE_CH = 'm';
+
+ public DevicesCore(String dir) {
+ this.dir = dir;
+ }
+
+ @Override
+ public SubSystemType getType() {
+ return SubSystemType.devices;
+ }
+
+ public static class Record {
+ Device device;
+ char type;
+ int accesses;
+
+ public Record(char type, Device device, int accesses) {
+ this.type = type;
+ this.device = device;
+ this.accesses = accesses;
+ }
+
+ public Record(String output) {
+ if (output.contains("*")) {
+ System.out.println("Pre:" + output);
--- End diff --
replace with logger
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