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Subject: Re: [PATCH] -DNO_DETACH and/or apr_proc_detach() confusion?
References: <200204012153.g31LrTp02672@smtp-server.nc.rr.com>
	<20020401141018.S1154@clove.org>
From: Jeff Trawick <trawick@attglobal.net>
Date: 01 Apr 2002 17:23:07 -0500
In-Reply-To: <20020401141018.S1154@clove.org>
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Aaron Bannert <aaron@clove.org> writes:

> On Mon, Apr 01, 2002 at 04:53:29PM -0500, Jeff Trawick wrote:
> > This gets -DNO_DETACH working for me with Apache's prefork MPM on
> > Linux and FreeBSD.  But from Aaron's commit log for revision
> > 1.34 I gather that this will break daemontools-like programs.
> > 
> > How should I get "./httpd -DNO_DETACH" to work?  Calling setsid() is
> > bogus.
> > 
> > This patch avoids the setsid() logic if we don't daemonize.
> 
> I don't understand how this is broken. If you don't want to daemonize
> but you still want to detach, you must be sure that httpd will not be
> a process group leader when it is started.   This can be done by running
> httpd from a shell script or as a child of another process (like from
> daemontools). Running "./httpd -DNO_DETACH" from the command line
> will cause httpd to be a process group leader [in most modern shells],
> which causes setsid() to fail and httpd to spit out an error. This seems
> correct to me. What am I missing? Perhaps apr_proc_detach needs to
> fail with a more specific error, and httpd should detect that error
> and write a more appropriate message?

as far as error reporting:

  the error is written to the log, not to stderr, so you don't see it

as far as what I want to do:

  I just want to run httpd in the foreground (e.g., from gdb); should
  I be doing something other than

     gdb prefix/bin/httpd
     break foo
     r -DNO_DETACH

  ?

Thanks,

-- 
Jeff Trawick | trawick@attglobal.net
Born in Roswell... married an alien...