X-Git-Url: https://git.librecmc.org/?p=oweals%2Ftinc.git;a=blobdiff_plain;f=src%2Flinux%2Fdevice.c;h=b4360a6a88e39220417eec816948a8cbbdc3d9a7;hp=d418aaf6928f433497f81a9189b81fbef0de1823;hb=e913f3f232e4809b7218d081ab9f94cef1c94ac3;hpb=8d64561dbc0542e7e1185591b8ecde3e56e1bfca

diff --git a/src/linux/device.c b/src/linux/device.c
index d418aaf..b4360a6 100644
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -107,17 +107,21 @@ static bool setup_device(void) {
 		ifr.ifr_flags |= IFF_ONE_QUEUE;
 #endif
 
-	if(iface)
+	if(iface) {
 		strncpy(ifr.ifr_name, iface, IFNAMSIZ);
+		ifr.ifr_name[IFNAMSIZ - 1] = 0;
+	}
 
 	if(!ioctl(device_fd, TUNSETIFF, &ifr)) {
 		strncpy(ifrname, ifr.ifr_name, IFNAMSIZ);
-		if(iface) free(iface);
+		ifrname[IFNAMSIZ - 1] = 0;
+		free(iface);
 		iface = xstrdup(ifrname);
 	} else if(!ioctl(device_fd, (('T' << 8) | 202), &ifr)) {
 		logger(LOG_WARNING, "Old ioctl() request was needed for %s", device);
 		strncpy(ifrname, ifr.ifr_name, IFNAMSIZ);
-		if(iface) free(iface);
+		ifrname[IFNAMSIZ - 1] = 0;
+		free(iface);
 		iface = xstrdup(ifrname);
 	} else
 #endif
@@ -126,8 +130,7 @@ static bool setup_device(void) {
 			overwrite_mac = true;
 		device_info = "Linux ethertap device";
 		device_type = DEVICE_TYPE_ETHERTAP;
-		if(iface)
-			free(iface);
+		free(iface);
 		iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device);
 	}