use a shell script to start SMF and detach stdin/stdout/stderr

(Boeing r1822)

daemon/core/services/nrl.py

@@ -83,16 +83,21 @@ class NrlSmf(NrlService):
     ''' Simplified Multicast Forwarding for MANET networks.
     '''
     _name = "SMF"
-    _startup = ("nrlsmf", )
+    _startup = ("sh startsmf.sh", )
     _shutdown = ("killall nrlsmf", )
     _validate = ("pidof nrlsmf", )
+    _configs = ("startsmf.sh", )
     
     @classmethod
-    def getstartup(cls,  node,  services):
-        ''' Generate the appropriate command-line based on node interfaces.
+    def generateconfig(cls, node, filename, services):
+        ''' Generate a startup script for SMF. Because nrlsmf does not
+        daemonize, it can cause problems in some situations when launched
+        directly using vcmd.
         '''
-        cmd = cls._startup[0]
-        cmd += " instance %s_smf" % node.name
+        cfg = "#!/bin/sh\n"
+        cfg += "# auto-generated by nrl.py:NrlSmf.generateconfig()\n"
+        comments = ""
+        cmd = "nrlsmf instance %s_smf" % (node.name)
 
         servicenames = map(lambda x: x._name,  services)
         netifs = filter(lambda x: not getattr(x, 'control', False), \
@@ -101,13 +106,16 @@ class NrlSmf(NrlService):
             return ()
                         
         if "arouted" in servicenames:
+            comments += "# arouted service is enabled\n"
             cmd += " tap %s_tap" % (node.name,)
             cmd += " unicast %s" % cls.firstipv4prefix(node, 24)
             cmd += " push lo,%s resequence on" % netifs[0].name
         if len(netifs) > 0:
             if "NHDP" in servicenames:
+                comments += "# NHDP service is enabled\n"
                 cmd += " ecds "
             elif "OLSR" in servicenames:
+                comments += "# OLSR service is enabled\n"
                 cmd += " smpr "
             else:
                 cmd += " cf "
@@ -116,7 +124,9 @@ class NrlSmf(NrlService):
             
         cmd += " hash MD5"
         cmd += " log /var/log/nrlsmf.log"
-        return (cmd, )
+
+        cfg += comments + cmd + " < /dev/null > /dev/null 2>&1 &\n\n"
+        return cfg
      
 addservice(NrlSmf)