Subject: [32751] net/dhcp startupitem

[Blair Zajac]

Hi Mark,

The guild says this:

"startupitem.executable.  Specifies the name of the daemon to be run  
in the background. It may have multiple arguments, but they must be  
appropriate for a call to exec; arbitrary shell code may not be used."

Should the actual daemon remain in the foreground so that the parent  
parent process can wait() on it?  Should the daemon make a PID file in  
a known location?

The guide could expand on this a bit.

Regards,
Blair

On Jan 13, 2008, at 12:11 PM, markd at macports.org wrote:

> Hi Blair,
>
> Executable startupitems are the preferred type.  Daemondo can track  
> pids
> automatically and reliably restart an application if it quits.  See  
> the
> guide on this:
>
> http://guide.macports.org/#reference.startupitems
>
> Given how startupitem executables work, I don't see an advantage to
> reverting to a "script" startupitem.  Or is there something I am  
> missing
> particular to dhcp?
>
> Mark
>
>> Log Message:
>> -----------
>> Use a startupitem method that uses dhcpd's PID file.
>
>> Modified Paths:
>> --------------
>>   trunk/dports/net/dhcp/Portfile
>>
>> Modified: trunk/dports/net/dhcp/Portfile
>> ===================================================================
>> --- trunk/dports/net/dhcp/Portfile      2008-01-13 03:07:29 UTC (rev
>> 32750)
>> +++ trunk/dports/net/dhcp/Portfile      2008-01-13 03:35:29 UTC (rev
>> 32751)
>> @@ -4,7 +4,7 @@
>>
>> name                   dhcp
>> version                        3.1.0
>> -revision               1
>> +revision               2
>> categories             net
>> description            ISC dhcpd server
>> long_description       ISC's Dynamic Host Configuration Protocol
>> Distribution \
>> @@ -40,8 +40,9 @@
>> configure.pre_args
>>
>> startupitem.create     yes
>> -startupitem.name       dhcpd
>> -startupitem.executable ${prefix}/sbin/dhcpd
>> +startupitem.start      "${prefix}/sbin/dhcpd"
>> +startupitem.restart    "/bin/kill -HUP \$(/bin/cat
>> ${prefix}/var/run/dhcpd.pid)"
>> +startupitem.stop       "/bin/kill -15 \$(/bin/cat
>> ${prefix}/var/run/dhcpd.pid)"
>

-- 
Blair Zajac, Ph.D.
CTO, OrcaWare Technologies
<blair at orcaware.com>
Subversion training, consulting and support
http://www.orcaware.com/svn/