get link field time and alarms

python/devsup/_nullapi.py

@@ -170,4 +170,10 @@ class _Field(object):
           lock is held (ie withing :meth:`process <DeviceSupport.process>`).
         """
 
+    def getAlarm(self):
+        """Returns a tuple (severity, status) with the condtion of the linked field.
+        
+        Only works for fields of type DBF_INLINK.
+        """
+
 _hooks = {}

python/devsup/db.py

@@ -288,6 +288,15 @@ class Field(_dbapi._Field):
             self._record = getRecord(rec)
             return self._record
 
+    def getTime(self):
+        """Get timestamp of link target.
+        
+        Only works for DBF_INLINK fields.
+        Returns the time in seconds since the posix epoch.
+        
+        :rtype: float
+        """
+
     def __cmp__(self, B):
         if isinstance(B, Field):
             B=B.getval()