From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sat, 17 Oct 2015 14:51:26 +0000 (+0200)
Subject: Add functionality to identify tun/tap devices
X-Git-Tag: 008~26
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d6dab20db9ed98f631b6d0ae31056a227b1c06b;p=network.git

Add functionality to identify tun/tap devices

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/functions/functions.device b/src/functions/functions.device
index a851b669..a79b81d5 100644
--- a/src/functions/functions.device
+++ b/src/functions/functions.device
@@ -313,6 +313,13 @@ device_is_serial() {
 	serial_exists $@
 }
 
+# Returns true if a device is a tun device
+device_is_tun() {
+	local device="${1}"
+
+	[ -e "${SYS_CLASS_NET}/${device}/tun_flags" ]
+}
+
 # Check if the device is a physical network interface
 device_is_ethernet() {
 	local device=${1}
@@ -338,6 +345,9 @@ device_is_ethernet() {
 	device_is_dummy ${device} && \
 		return ${EXIT_ERROR}
 
+	device_is_tun ${device} && \
+		return ${EXIT_ERROR}
+
 	return ${EXIT_OK}
 }
 
@@ -377,6 +387,9 @@ device_get_type() {
 	elif device_is_dummy ${device}; then
 		echo "dummy"
 
+	elif device_is_tun ${device}; then
+		echo "tun"
+
 	elif device_is_ethernet ${device}; then
 		echo "ethernet"