From d59eaffe242347c2cc99e55fce494f1d4f8e82c8 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 30 Jan 2012 12:01:15 +0000
Subject: [PATCH] -check if /dev/net/tun exists and skip test otherwise

---
 src/vpn/test_gnunet_vpn.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/vpn/test_gnunet_vpn.c b/src/vpn/test_gnunet_vpn.c
index 2ef5f96e9..4df9e7eb0 100644
--- a/src/vpn/test_gnunet_vpn.c
+++ b/src/vpn/test_gnunet_vpn.c
@@ -476,6 +476,15 @@ main (int argc, char *const *argv)
     GNUNET_GETOPT_OPTION_END
   };
 
+  if (0 != ACCESS ("/dev/net/tun", R_OK))
+  {
+    GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
+			      "access",
+			      "/dev/net/tun");
+    fprintf (stderr,
+	     "WARNING: System unable to run test, skipping.\n");
+    return 0;
+  }
   if ( (GNUNET_YES !=
 	GNUNET_OS_check_helper_binary ("gnunet-helper-vpn")) ||
        (GNUNET_YES !=
-- 
2.25.1