/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.bootjni;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import com.caucho.config.ConfigException;
import com.caucho.inject.Module;
import com.caucho.util.JniTroubleshoot;
import com.caucho.util.L10N;
import com.caucho.vfs.ReadStream;
import com.caucho.vfs.StreamImpl;
import com.caucho.server.util.CauchoSystem;
/**
* Resin's bootstrap class.
*/
@Module
public class JniProcess extends Process
{
private static final L10N L
= new L10N(JniProcess.class);
private static final JniTroubleshoot _jniTroubleshoot;
private int _stdoutFd = -1;
private int _pid = -1;
private int _status = -1;
private ReadStream _is;
public JniProcess()
{
}
private JniProcess(ArrayList<String> args,
HashMap<String,String> env,
String chroot,
String pwd,
String user,
String group)
{
String []argv = new String[args.size()];
args.toArray(argv);
String []envp = new String[env.size()];
int i = 0;
for (Map.Entry<String,String> entry : env.entrySet()) {
envp[i++] = entry.getKey() + '=' + entry.getValue();
}
int fdMax = setFdMax();
if (CauchoSystem.isUnix() && fdMax <= 0) {
System.out.println(L.l("process file descriptors: {0}", fdMax));
}
if (! exec(argv, envp, chroot, pwd, user, group))
throw new IllegalStateException("exec failed");
int stdoutFd = _stdoutFd;
_stdoutFd = -1;
try {
StreamImpl stream;
Class<?> cl = Class.forName("com.caucho.vfs.JniFileStream",
false, getClass().getClassLoader());
Constructor<?> ctor = cl.getConstructor(new Class[] { int.class, boolean.class, boolean.class });
stream = (StreamImpl) ctor.newInstance(stdoutFd, true, false);
_is = new ReadStream(stream);
} catch (Exception e) {
throw ConfigException.create(e);
}
}
public JniProcess create(ArrayList<String> args,
HashMap<String,String> env,
String chroot,
String pwd,
String user,
String group)
{
_jniTroubleshoot.checkIsValid();
assert(isNativeBootAvailable());
return new JniProcess(args, env, chroot, pwd, user, group);
}
public boolean isEnabled()
{
return _jniTroubleshoot.isEnabled() && isNativeBootAvailable();
}
public String getTroubleshootMessage()
{
return _jniTroubleshoot.getMessage();
}
public OutputStream getOutputStream()
{
return new NullOutputStream();
}
public InputStream getInputStream()
{
return _is;
}
public InputStream getErrorStream()
{
return getInputStream();
}
public int getPid()
{
return _pid;
}
public void chown(String path, String user, String group)
{
_jniTroubleshoot.checkIsValid();
byte []name = path.getBytes();
int len = name.length;
nativeChown(name, len, user, group);
}
@Override
public int waitFor()
{
int pid = _pid;
_pid = 0;
if (pid > 0) {
_status = waitpid(pid, true);
}
return _status;
}
@Override
public int exitValue()
{
if (_status >= 0)
return _status;
if (_pid > 0) {
int result = waitpid(_pid, false);
if (result < 0)
throw new IllegalThreadStateException("Pid " + _pid + " not yet closed");
_pid = 0;
_status = result;
}
return _status;
}
public void destroy()
{
}
static class NullOutputStream extends OutputStream {
public void write(int ch)
{
}
public void flush()
{
}
public void close()
{
}
}
public native boolean isNativeBootAvailable();
public native boolean clearSaveOnExec();
public native static int getFdMax();
public native static int setFdMax();
private native boolean exec(String []argv,
String []envp,
String chroot,
String pwd,
String user,
String group);
private native void nativeChown(byte []name, int length,
String user, String group);
private native int waitpid(int pid, boolean isBlock);
static {
JniTroubleshoot jniTroubleshoot = null;
try {
System.loadLibrary("resin_os");
jniTroubleshoot = new JniTroubleshoot(JniProcess.class, "resin_os");
} catch (Throwable e) {
jniTroubleshoot = new JniTroubleshoot(JniProcess.class, "resin_os", e);
}
_jniTroubleshoot = jniTroubleshoot;
}
}