Provide 'dev_type' environment variable to plug-ins and script hooks

Normally OpenVPN is configured with --dev {tun,tap}, but it is also possible
to use --dev myvpn instead.  In these situations, OpenVPN will request
--dev-type as well to be able to set up a tun or tap device properly.

The 'dev' environment variable will contain the value provided by --dev.  In
those cases where the plug-in/script need to behave differently when using a tun
device versus using a tap device, there are no possibilities for it to know what
kind of device --dev myvpn would be.

This patch adds a 'dev_type' environment variable which contains a string of the
device type, either automatically discovered based on the --dev name, or set using
the --dev-type option.

Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>
Acked-by: James Yonan <james@openvpn.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/misc.h b/misc.h
index 3f22ca0..dbd206a 100644
--- a/misc.h
+++ b/misc.h
@@ -93,6 +93,7 @@ void run_up_down (const char *command,
 		  const struct plugin_list *plugins,
 		  int plugin_type,
 		  const char *arg,
+		  const char *dev_type,
 		  int tun_mtu,
 		  int link_mtu,
 		  const char *ifconfig_local,