From cd0d1a1d26b6ae13dc1c6e51189d4cfc2836e3d3 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Sun, 4 Mar 2018 13:57:34 -0600
Subject: [PATCH] get the fd instead of depending on water to do it

---
 src/yggdrasil/tun.go     | 16 +++-------------
 src/yggdrasil/tun_bsd.go |  5 +++--
 2 files changed, 6 insertions(+), 15 deletions(-)

diff --git a/src/yggdrasil/tun.go b/src/yggdrasil/tun.go
index bc14ae2..5f5e50a 100644
--- a/src/yggdrasil/tun.go
+++ b/src/yggdrasil/tun.go
@@ -2,29 +2,19 @@ package yggdrasil
 
 // This manages the tun driver to send/recv packets to/from applications
 
-import "os"
-import ethernet "github.com/songgao/packets/ethernet"
+import "github.com/songgao/packets/ethernet"
+import "github.com/yggdrasil-network/water"
 
 const IPv6_HEADER_LENGTH = 40
 const ETHER_HEADER_LENGTH = 14
 
-type tunInterface interface {
-	IsTUN() bool
-	IsTAP() bool
-	Name() string
-	Read(to []byte) (int, error)
-	Write(from []byte) (int, error)
-	Close() error
-	FD() *os.File
-}
-
 type tunDevice struct {
 	core   *Core
 	icmpv6 icmpv6
 	send   chan<- []byte
 	recv   <-chan []byte
 	mtu    int
-	iface  tunInterface
+	iface  *water.Interface
 }
 
 type tunDefaultParameters struct {
diff --git a/src/yggdrasil/tun_bsd.go b/src/yggdrasil/tun_bsd.go
index 84a9d3c..bf8a6f8 100644
--- a/src/yggdrasil/tun_bsd.go
+++ b/src/yggdrasil/tun_bsd.go
@@ -2,12 +2,13 @@
 
 package yggdrasil
 
+import "os"
 import "os/exec"
 import "unsafe"
 
 import "golang.org/x/sys/unix"
 
-import water "github.com/yggdrasil-network/water"
+import "github.com/yggdrasil-network/water"
 
 type in6_addrlifetime struct {
 	ia6t_expire    float64
@@ -61,7 +62,7 @@ func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int)
 }
 
 func (tun *tunDevice) setupAddress(addr string) error {
-	fd := tun.iface.FD().Fd()
+	fd := tun.iface.ReadWriteCloser.(*os.File).Fd()
 	var err error
 	var ti tuninfo