From 9ec9423292c4bc681496fd3b8ce44ca06a774e90 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Sat, 24 May 2014 22:25:56 +0200
Subject: [PATCH] udp: a little ifname optimization

---
 src/udp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/udp.c b/src/udp.c
index aeaaad52..5452456b 100644
--- a/src/udp.c
+++ b/src/udp.c
@@ -300,9 +300,10 @@ udp_connect ( const char *subsystem, const char *name,
   }
 
   /* Bind to interface */
-  memset(&ifr, 0, sizeof(ifr));
   if (ifname && *ifname) {
-    snprintf(ifr.ifr_name, IFNAMSIZ, "%s", ifname);
+    memset(&ifr, 0, sizeof(ifr));
+    strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+    ifr.ifr_name[IFNAMSIZ-1] = '\0';
     if (ioctl(fd, SIOCGIFINDEX, &ifr)) {
       tvherror(subsystem, "%s - could not find interface %s",
                name, ifname);