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From Aaron Bannert <aa...@clove.org>
Subject Re: [PATCH] -DNO_DETACH and/or apr_proc_detach() confusion?
Date Mon, 01 Apr 2002 22:10:18 GMT
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?

-aaron

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