Great Circle Associates Firewalls
(November 1997)
 

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Subject: Re: System resource controller
From: Anton J Aylward <anton @ Toronto . com>
Date: Sat, 15 Nov 1997 08:37:44 -0500
To: Johannes Schwabe <johannes . schwabe @ informatik . tu-chemnitz . de>, Anton J Aylward <anton @ Toronto . com>
Cc: firewalls @ GreatCircle . COM

At 03:34 PM 14/11/97 +0100, Johannes Schwabe wrote:
## Reply Start ##
>On Fri, 14 Nov 1997, Anton J Aylward wrote:
>
>> Situation is this: Normal "separation of Duties" methods of
>> security applied to DNS.   A DNS administrator with a 
>> login ID of "bind" owns the resource files.   This is to 
>> avoid doing everything as root!  Apropriate support via
>> symlinks and whatever.
>> 
>> But when a change has been made there is a need to HUP the 
>> named.  Since named runs on a privileged port it is run
>> as root.  The userID "bind" can't HUP it.
>
>Write a program to find out the PID of named and kill it. Make that
>program SUID root and accessible by user "bind" only. Take care that
>the SUID program cannot be misused.

I'm long past this stage.
More specifically, I have such a program - began life as a shell script -
which looks for all the appropriate .pid files.  Under LINUX its easy - 
look in /var/run.    So even that is more general than your specific one.
However, AIX's tool is more general still, start, stop, refresh....

But I don't like writing code if its reinventing the wheel.
Which was the point my question.  If its already been written,
someone has thought this thru and perhaps seen things I haven't.

/anton





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