#!/usr/bin/perl

use strict;
use Sys::Syslog;

sub is_open { defined fileno(*Sys::Syslog::SYSLOG) }

print "opened? ",is_open() ? 'yes' : 'no', "\n";
print "calling openlog()\n";
openlog("perl","ndelay","LOG_LOCAL0") or die;
print "opened? ",is_open() ? 'yes' : 'no', "\n";
__END__
opened? no
calling openlog()
opened? yes
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If the filehandle is closed, fileno returns undef. Of course it would be nice if that were inside Sys::Syslog and the filehandle wouldn't be accessible from outside.

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