Close fds in child for safe migration and reset signal map

cloudcontrol/node/hypervisor/__init__.py

@@ -27,6 +27,7 @@ from cloudcontrol.node.exc import (
 from cloudcontrol.node.hypervisor.jobs import (
     ImportVolume, ExportVolume, TCPTunnel, DRBD,
 )
+from cloudcontrol.node.utils import close_fds, set_signal_map
 
 
 logger = logging.getLogger(__name__)
@@ -360,7 +361,17 @@ class Handler(HostHandler):
             # child
             sys.stderr.write('Hello from child !\n')
             sys.stderr.write('Debug is %s\n' % self.main.config.debug)
-            # FIXME we should close all unused fds
+            try:
+                close_fds(debug=self.main.config.debug)
+                set_signal_map({
+                    signal.SIGTERM: lambda *args: os._exit(1),
+                    signal.SIGUSR1: signal.SIG_IGN,
+                    signal.SIGINT: signal.SIG_IGN,
+                    # FIXME need more signal ?
+                })
+            except:
+                sys.stderr.write('Error while performing post fork work\n')
+                traceback.print_exc(file=sys.stderr)
             # create a new libvirt connection dedicated to migration
             sys.stderr.write('Open new connection to libvirt\n')
             try: