From 269f81904cb46ed80666adb84adc869365fadba8 Mon Sep 17 00:00:00 2001
From: "Tristan B. Kildaire" <deavmi@redxen.eu>
Date: Sun, 18 Jul 2021 19:26:08 +0200
Subject: [PATCH] Added status of ioctl as return value when failed, fd when
 succeeded

---
 source/libtun/tunctl.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/source/libtun/tunctl.c b/source/libtun/tunctl.c
index e2b7093..7311ebd 100644
--- a/source/libtun/tunctl.c
+++ b/source/libtun/tunctl.c
@@ -35,9 +35,13 @@ int createTun(char* interfaceName, int iffFlags)
     strcpy(interfaceReqData.ifr_name, interfaceName);
 
     /* Attempt to bring up the tun device node */
-    tunFD = ioctl(tunFD, TUNSETIFF, &interfaceReqData);
-
+    int tunStatus = ioctl(tunFD, TUNSETIFF, &interfaceReqData);
 
+    if(tunStatus < 0)
+    {
+        tunFD =  tunStatus;
+    }
+    
     return tunFD;
 }