Linux systemd: two small fixes (#171)

* Linux systemd: fixed bug in service configuration template. Dependencies should now work for Linux systemd.

* Linux systemd: enabled detection of systemd inside chroot environments

* Linux systemd: enabled detection of systemd inside chroot environments fix

service_systemd_linux.go

@@ -5,6 +5,7 @@
 package service
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"os"
@@ -20,6 +21,21 @@ func isSystemd() bool {
 	if _, err := os.Stat("/run/systemd/system"); err == nil {
 		return true
 	}
+	if _, err := os.Stat("/proc/1/comm"); err == nil {
+		filerc, err := os.Open("/proc/1/comm")
+		if err != nil {
+			return false
+		}
+		defer filerc.Close()
+
+		buf := new(bytes.Buffer)
+		buf.ReadFrom(filerc)
+		contents := buf.String()
+
+		if strings.Trim(contents, " \r\n") == "systemd" {
+			return true
+		}
+	}
 	return false
 }
 
@@ -228,9 +244,8 @@ func (s *systemd) Restart() error {
 const systemdScript = `[Unit]
 Description={{.Description}}
 ConditionFileIsExecutable={{.Path|cmdEscape}}
-{{range .Dependencies}}
+{{range $i, $dep := .Dependencies}} 
-{{.}}
+{{$dep}} {{end}}
-{{end}}
 
 [Service]
 StartLimitInterval=5