From ed9540b4a92d2abb6719d36418f3827ac313a59d Mon Sep 17 00:00:00 2001
From: Gaurav Sinha <gaurav.sinha@vyatta.com>
Date: Sat, 17 Nov 2012 00:57:57 -0800
Subject: Add signal handler to handle CTRL+C to avoid commit blockade on lock
 file (cherry picked from commit 69de682b364d7bce7aefecb00a4e06eceaeb834d)

---
 lib/Vyatta/IpTables/IpSet.pm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/Vyatta/IpTables/IpSet.pm b/lib/Vyatta/IpTables/IpSet.pm
index 5c4b6ce..729c58e 100755
--- a/lib/Vyatta/IpTables/IpSet.pm
+++ b/lib/Vyatta/IpTables/IpSet.pm
@@ -55,6 +55,15 @@ my $logger = 'logger -t IpSet.pm -p local0.warn --';
 my $addr_range_mask = 24;
 my $lockfile = "/opt/vyatta/config/.lock";
 
+# remove lock file to avoid commit blockade on interrupt
+# like CTRL+C.
+sub INT_handler {
+    my $rc = system("sudo rm -f $lockfile >>/dev/null");
+    exit(0);
+}
+
+$SIG{'INT'} = 'INT_handler';
+
 sub new {
     my ($that, $name, $type) = @_;
 
-- 
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