logger: fix cannot redirect to file in background mode (#16)

Author: qile222

README.md

@@ -1,6 +1,6 @@
 # Yoda Monitor
 [![License](https://img.shields.io/badge/licence-Apache%202.0-brightgreen.svg?style=flat)](LICENSE)
-[![Build Status](https://travis-ci.org/yodaos-project/edge-monitor.svg?branch=master)](https://travis-ci.org/yodaos-project/edge-monitor)
+[![Build Status](https://travis-ci.com/yodaos-project/edge-monitor.svg?branch=master)](https://travis-ci.org/yodaos-project/edge-monitor)
 
 Collect and upload system data in real time. Currently supports the following features:
 

src/env.cpp

@@ -50,8 +50,8 @@ static void setupLogger() {
 int32_t Env::setup() {
   close(0);
   open("/dev/null", O_RDWR);
-  setupLogger();
   runInBackground();
+  setupLogger();
   return 0;
 }