Added missing file

modules/daemon.js

@@ -0,0 +1,58 @@
+/*
+Copyright 2020 Intel Corporation
+
+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.
+*/
+
+
+function stdoutHandler(c)
+{
+    if (this.parent.parent.options.stdout) { process.stdout.write(c); }
+}
+function exitHandler(code)
+{
+    if (this.parent.options.crashRestart && code != this.parent.options.exit)
+    {
+        var tmp = start(this.parent.path, this.parent.parameters, this.parent.options);
+        this.parent.child = tmp.child;
+        this.parent.child.parent = this.parent;
+    }
+    else
+    {
+        this.parent.emit('done');
+    }
+}
+
+function start(path, parameters, options)
+{
+    if (options == null) { options = {}; }
+    if (options.exit == null) { options.exit = 0; }
+    var ret = { options: options, path: path, parameters: parameters };
+    require('events').EventEmitter.call(ret, true)
+        .createEvent('done');
+    ret.child = require('child_process').execFile(path, parameters, ret.options);
+    ret.child.parent = ret;
+    ret.child.stdout.on('data', stdoutHandler);
+    ret.child.stderr.on('data', stdoutHandler);
+    ret.child.on('exit', exitHandler);
+    return (ret);
+}
+
+function agent()
+{
+    var args = process.argv;
+    args.splice(1, 1);
+    start(process.execPath, args, { crashRestart: true, exit: 6565 }).on('done', function () { process.exit(); });
+}
+
+module.exports = { start: start, agent: agent };