From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Thu, 18 Jul 2019 17:26:25 +0000 (+0200)
Subject: tun: windows: open file at startup time
X-Git-Tag: 0.0.20190805~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31ff9c02fec42f38b0e444c41744887a1b9fedaf;p=thirdparty%2Fwireguard-go.git

tun: windows: open file at startup time
---

diff --git a/tun/tun_windows.go b/tun/tun_windows.go
index 86995a7..dff51dd 100644
--- a/tun/tun_windows.go
+++ b/tun/tun_windows.go
@@ -142,6 +142,15 @@ func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID) (Dev
 		return nil, fmt.Errorf("Error creating event: %v", err)
 	}
 
+	_, err = tun.getTUN()
+	if err != nil {
+		windows.CloseHandle(tun.rings.send.tailMoved)
+		windows.CloseHandle(tun.rings.receive.tailMoved)
+		tun.closeTUN()
+		wt.DeleteInterface()
+		return nil, err
+	}
+
 	return tun, nil
 }