From 69ff4be6e7c8257834815dbdc0a2fd3563f6f350 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Tue, 24 Jan 2023 09:49:35 +0000
Subject: [PATCH] http: reuse STDIN if it's already /dev/null
It's typical for -netd/-httpd to have STDIN pointed to
/dev/null, so try to use that instead of opening another
file description.
---
lib/PublicInbox/HTTP.pm | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/lib/PublicInbox/HTTP.pm b/lib/PublicInbox/HTTP.pm
index 0dba425d..ca162939 100644
--- a/lib/PublicInbox/HTTP.pm
+++ b/lib/PublicInbox/HTTP.pm
@@ -43,7 +43,13 @@ use Errno qw(EAGAIN);
our $MAX_REQUEST_BUFFER = $ENV{GIT_HTTP_MAX_REQUEST_BUFFER} ||
(10 * 1024 * 1024);
-open(my $null_io, '<', '/dev/null') or die "failed to open /dev/null: $!";
+open(my $null_io, '<', '/dev/null') or die "open /dev/null: $!";
+{
+ my @n = stat($null_io) or die "stat(/dev/null): $!";
+ my @i = stat(STDIN) or die "stat(STDIN): $!";
+ $null_io = *STDIN{IO} if "@n[0, 1]" eq "@i[0, 1]";
+}
+
my $http_date;
my $prev = 0;
sub http_date () {
--
2.50.0