Fix Permision denied for daemon pid file

os/daemon/daemon.go

@@ -85,7 +85,10 @@ func (d *Daemon) Run() error {
 
 	if d.startServer || d.restartServer {
 		if pid := d.getPid(); pid == 0 {
-			d.startProcess()
+			err := d.startProcess()
+			if err != nil {
+				return err
+			}
 			os.Exit(0)
 		}
 		return errors.New("Process allready running")
@@ -111,7 +114,11 @@ func (d *Daemon) Run() error {
 // Read pid from file , check if process is running
 func (d *Daemon) getPid() int {
 	var pid int
-	f, err := os.Open(d.PidFile)
+	f, err := os.OpenFile(
+		d.PidFile,
+		os.O_RDONLY,
+		0666,
+	)
 	if err != nil {
 		return 0
 	}
@@ -182,6 +189,17 @@ func (d *Daemon) startProcess() error {
 	procArgs := []string{}
 	opt := ""
 
+	// Test if we can create pid file
+	pidfile, err := os.OpenFile(
+		d.PidFile,
+		os.O_CREATE|os.O_RDWR,
+		0666,
+	)
+	if err != nil {
+		return err
+	}
+	pidfile.Close()
+
 	for _, arg := range d.args {
 		if strings.HasPrefix(arg, "-") {
 			opt = arg
@@ -199,9 +217,10 @@ func (d *Daemon) startProcess() error {
 		Dir:   procPath,
 		Env:   env,
 		Files: []*os.File{nil, nil, nil},
+		//Files: []*os.File{os.Stdin, os.Stdout, os.Stderr},
 	}
 
-	_, err := os.StartProcess(procName, procArgs, procAttr)
+	_, err = os.StartProcess(procName, procArgs, procAttr)
 	if err != nil {
 		return err
 	}