attempt to add systemd-support for gentoo

bin/sau

@@ -46,6 +46,12 @@ def init():
 
 def fork_and_reboot():
     log = logging.getLogger(sau.LOGNAME)
+    if os.path.exist('/proc/1/comm'):
+        with open('/proc/1/comm', 'r') as f:
+            if f.readline() == 'systemd':
+                os.execl('/usr/bin/systemctl', 'reboot')
+                log.error("Failed to execl?")
+                sys.exit(1)
     try:
         pid = os.fork()
         if pid != 0: