/**
* 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 com.alibaba.jstorm.utils;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SystemOperation {
public static final Logger LOG = LoggerFactory.getLogger(SystemOperation.class);
public static boolean isRoot() throws IOException {
String result = SystemOperation.exec("echo $EUID").substring(0, 1);
return Integer.valueOf(result.substring(0, result.length())).intValue() == 0 ? true : false;
};
public static void mount(String name, String target, String type, String data) throws IOException {
StringBuilder sb = new StringBuilder();
sb.append("mount -t ").append(type).append(" -o ").append(data).append(" ").append(name).append(" ").append(target);
SystemOperation.exec(sb.toString());
}
public static void umount(String name) throws IOException {
StringBuilder sb = new StringBuilder();
sb.append("umount ").append(name);
SystemOperation.exec(sb.toString());
}
public static String exec(String cmd) throws IOException {
List<String> commands = new ArrayList<String>();
commands.add("/bin/bash");
commands.add("-c");
commands.add(cmd);
return JStormUtils.launchProcess(cmd, commands, new HashMap<String, String>(), false);
}
public static void main(String[] args) throws IOException {
SystemOperation.mount("test", "/cgroup/cpu", "cgroup", "cpu");
}
}