daemon: don't bother checking for existing FD flags

FD_CLOEXEC is the only currently defined FD flag, and has been
the case for decades at this point.  I highly doubt any default
FD flag will ever be forced on us by the kernel, init system, or
Perl.  So save ourselves a syscall and just call F_SETFD with
the assumption FD_CLOEXEC is the only FD flag that we'd ever
care for.

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/PublicInbox/DS.pm b/lib/PublicInbox/DS.pm
index a6c43b22..e4629e97 100644
--- a/lib/PublicInbox/DS.pm
+++ b/lib/PublicInbox/DS.pm
@@ -130,8 +130,7 @@ sub _InitPoller () {
                 my $fd = epoll_create();
                 die "epoll_create: $!" if $fd < 0;
                 open($ep_io, '+<&=', $fd) or return;
-                my $fl = fcntl($ep_io, F_GETFD, 0);
-                fcntl($ep_io, F_SETFD, $fl | FD_CLOEXEC);
+                fcntl($ep_io, F_SETFD, FD_CLOEXEC);
                 $fd;
         } else {
                 my $cls;