From 9ae2454c474b8984235ef7607efc585f8a50f2bc Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Mon, 26 Jun 2017 17:44:41 +0000
Subject: watch: avoid potential race condition while quitting

We must not trigger future activity when initializing
a -watch shutdown.
---
 lib/PublicInbox/WatchMaildir.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/WatchMaildir.pm b/lib/PublicInbox/WatchMaildir.pm
index 8e10e43f..5ae3d21f 100644
--- a/lib/PublicInbox/WatchMaildir.pm
+++ b/lib/PublicInbox/WatchMaildir.pm
@@ -225,7 +225,7 @@ sub watch {
 
 sub trigger_scan {
 	my ($self, $base) = @_;
-	my $dir = $self->{scandir} or die "not watch-ing, yet\n";
+	my $dir = $self->{scandir} or return;
 	open my $fh, '>', "$dir/$base" or die "open $dir/$base failed: $!\n";
 	close $fh or die "close $dir/$base failed: $!\n";
 }
@@ -235,6 +235,7 @@ sub scan {
 	if ($path =~ /quit\z/) {
 		%{$self->{opendirs}} = ();
 		_done_for_now($self);
+		delete $self->{scandir};
 		$self->{quit} = 1;
 		return;
 	}
-- 
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