From 501a4c7fd2ce8af909e553894ee3f1956e29a91c Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Thu, 19 Jan 2012 19:04:24 -0800
Subject: Enforce length restriction on interface description

Bug 7730
Kernel limit on interface description (ifalias) is 256 characters.
---
 templates/interfaces/bridge/node.tag/description/node.def | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'templates/interfaces/bridge')

diff --git a/templates/interfaces/bridge/node.tag/description/node.def b/templates/interfaces/bridge/node.tag/description/node.def
index e4807d2f..c6d2789d 100644
--- a/templates/interfaces/bridge/node.tag/description/node.def
+++ b/templates/interfaces/bridge/node.tag/description/node.def
@@ -1,4 +1,8 @@
 type: txt
 help: Description
+
+syntax:expression: pattern $VAR(@) "^.{1,256}$" \
+	; "interface description is too long (limit 256 characters)"
+
 update: sudo sh -c "echo \"$VAR(@)\" >/sys/class/net/$VAR(../@)/ifalias"
 delete: sudo sh -c "echo '' >/sys/class/net/$VAR(../@)/ifalias"
-- 
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