I have a new daemon (using Proc::Daemon) that I'd like to sighup to get it to reload config, but no matter what I do, it kills the daemon.
After:
Proc::Daemon::Init();
I use: 

$SIG{HUP}  = sub {
  if (defined $log)
  {
    undef $log;
  }

  $log = IO::File->new(LOGFILE, 'w');
  $log->print(strftime("%m/%d/%Y %H:%M:%S", localtime),": Caught HUP, 
+reset logfile\n");
  $log->print("pid = $$\n");
  $log->autoflush(1);
};

[download]
I get the message in the log, but then my daemon dies. I've tried changing the code inside to something simpler, but it doesn't seem to matter. On the other hand $SIG{HUP} = 'IGNORE' works fine.

If I create a simple script it doesn't kill the program when I sighup it: 

#!/usr/bin/perl

$SIG{HUP}  = sub {
  print "got hup\n";
};

while (1)
{
  print "sleeping\n";
  sleep(1);
}

[download]

The searching I have done show's lots of examples of restarting the script, but I cannot find any that just reaload configs (well, perl daemons that reaload).

Is there something different about how sighup works on regular apps vs daemon apps?

Thanks for your time,
-Andy

In reply to SIGHUP with Proc::Daemon by jaandy

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