From: Michael Tremer <michael.tremer@ipfire.org>
Date: Tue, 13 Jun 2017 18:24:41 +0000 (+0100)
Subject: device_get_speed(): Break if speed is not readable
X-Git-Tag: 009~220
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f887607cc3da5271d3d475e366b13beec0b27664;p=network.git

device_get_speed(): Break if speed is not readable

This is usually the case when a device has no link
(i.e. the speed is unknown).

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

diff --git a/src/functions/functions.device b/src/functions/functions.device
index 32108bb0..ac6ace5b 100644
--- a/src/functions/functions.device
+++ b/src/functions/functions.device
@@ -862,6 +862,9 @@ device_get_speed() {
 
 	local speed=$(__device_get_file ${device} speed)
 
+	# Exit for no output (i.e. no link detected)
+	isset speed || return ${EXIT_ERROR}
+
 	# Don't return anything for negative values
 	[ ${speed} -lt 0 ] && return ${EXIT_ERROR}