Add --route-pre-down/OPENVPN_PLUGIN_ROUTE_PREDOWN script/plug-in hook

This patchs adds a script/plug-in hook which is called right before the
network routes are taken down.  This gives external processes a
possibility to tear down communication over the VPN before the VPN
disappears.

One use case can be to mount a networked file system over the VPN via
--route-up.  And then to unmount this file system via --route-pre-down

Signed-off-by: David Sommerseth <davids@redhat.com>
Acked-by: Gert Doering <gert@greenie.muc.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/options.h b/options.h
index 03fd197..831d4f6 100644
--- a/options.h
+++ b/options.h
@@ -360,6 +360,7 @@ struct options
 
   /* route management */
   const char *route_script;
+  const char *route_predown_script;
   const char *route_default_gateway;
   int route_default_metric;
   bool route_noexec;