in fork() do sys.exit() so parent knows about failures

Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>

bin/cdist

@@ -177,28 +177,25 @@ def configinstall_onehost(host, args, mode, parallel):
         context.cleanup()
 
     except cdist.Error as e:
-        log.error(e)
-        return False
-    except KeyboardInterrupt:
-        # Do not care in sequential mode, catch in parallel mode
-        if not parallel:
-            raise
+        if parallel:
+            log.error(e)
+            sys.exit(1)
         else:
-            # Catch here, above does not need to know about our errors
-            return False
+            raise
 
-    return True
+    except KeyboardInterrupt:
+        # Ignore in parallel mode, we are existing anyway
+        if parallel:
+            sys.exit(0)
+        # Pass back to controlling code in sequential mode
+        else:
+            raise
 
 def emulator():
     """Prepare and run emulator"""
-    try:
-        import cdist.emulator
-        emulator = cdist.emulator.Emulator(sys.argv)
-        emulator.run()
-
-    except cdist.Error as e:
-        log.error(e)
-        sys.exit(1)
+    import cdist.emulator
+    emulator = cdist.emulator.Emulator(sys.argv)
+    return emulator.run()
 
 if __name__ == "__main__":
     # Sys is needed for sys.exit()
@@ -213,9 +210,8 @@ if __name__ == "__main__":
 
         cdistpythonversion = '3.2'
         if sys.version < cdistpythonversion:
-            print('Cdist requires Python >= ' + cdistpythonversion +
+            raise cdist.Error('Cdist requires Python >= ' + cdistpythonversion +
                 ' on the source host.')
-            sys.exit(1)
 
         # Ensure our /lib/ is included into PYTHON_PATH
         sys.path.insert(0, os.path.abspath(
@@ -236,6 +232,10 @@ if __name__ == "__main__":
     except KeyboardInterrupt:
         pass
 
+    except cdist.Error as e:
+        log.error(e)
+        exit_code = 1
+
     # Determine exit code by return value of function
     if not run:
         exit_code = 1