[CalendarServer-dev] Exception in recvfd --was: Re: continuing work on FreeBSD ports

[Fredrik Unger]

Hi,

I found some problem with sendfd.c some time ago. [1]

My problem was with 64 bit Debian and twext/python/sendmsg.c

Have a look and see if there is anything that is FreeBSD non friendly 
there.

You can try with the tests :
cd twext/python
trial test/test_sendmsg.py
That could be easier to debug than the full code.

On my setup I failed test_sendSubProcessFD now, but I just did a quick 
test. Sources are not up to date or anything..

You can also add some printouts to the C code, and see if you find 
something bad.

It is most probably some flags or so that might not be covered for BSD ?
and sendmsg.c is the interface to the operating system from python..

Just some suggestions. If you need more pointers let me know, but I have 
no experience with FreeBSD..

/Fred

[1] 
https://lists.macosforge.org/pipermail/calendarserver-users/2012-August/002032.html

On 02/08/2013 01:04 PM, Axel Rau wrote:
>
> Am 02.02.2013 um 17:39 schrieb Axel Rau:
>
>> [caldav-0] 	  File "/usr/local/lib/python2.7/site-packages/Calendar_and_Contacts_Server-4.2-py2.7-freebsd-8.2-RELEASE-p9-amd64.egg/twext/python/sendfd.py", line 65, in recvfd
>> [caldav-0] 	    [unpackedFD] = unpack("i", packedFD)
>> [caldav-0] 	struct.error: unpack requires a string argument of length 4
> This is hard to debug. I did not make much progress.
> If I switch to kqueue-reactor, I'm getting another FD problem when starting listening:
> ---
> Log opened.
> twistd 12.1.0 (/usr/local/bin/python2.7 2.7.3) starting up.
> reactor class: twext.internet.kqreactor.KQueueReactor.
> ControlSocket starting on '/var/db/caldavd/caldavd.sock'
> Traceback (most recent call last):
>    File "/usr/local/bin/twistd", line 14, in<module>
>      run()
>    File "/usr/local/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 27, in run
>      app.run(runApp, ServerOptions)
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 652, in run
>      runApp(config)
>    File "/usr/local/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 23, in runApp
>      _SomeApplicationRunner(config).run()
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/app.py", line 390, in run
>      self.postApplication()
>    File "/usr/local/lib/python2.7/site-packages/twisted/scripts/_twistd_unix.py", line 230, in postApplication
>      self.startApplication(self.application)
>    File "/usr/local/lib/python2.7/site-packages/twisted/scripts/_twistd_unix.py", line 340, in startApplication
>      service.IService(application).privilegedStartService()
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/service.py", line 277, in privilegedStartService
>      service.privilegedStartService()
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/service.py", line 277, in privilegedStartService
>      service.privilegedStartService()
>    File "/usr/local/lib/python2.7/site-packages/Calendar_and_Contacts_Server-4.2-py2.7-freebsd-9.1-RELEASE-amd64.egg/calendarserver/tap/caldav.py", line 487, in privilegedStartService
>      super(GroupOwnedUNIXServer, self).privilegedStartService()
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/internet.py", line 105, in privilegedStartService
>      self._port = self._getPort()
>    File "/usr/local/lib/python2.7/site-packages/twisted/application/internet.py", line 133, in _getPort
>      'listen%s' % (self.method,))(*self.args, **self.kwargs)
>    File "/usr/local/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 406, in listenUNIX
>      p.startListening()
>    File "/usr/local/lib/python2.7/site-packages/twisted/internet/unix.py", line 303, in startListening
>      self.startReading()
>    File "/usr/local/lib/python2.7/site-packages/twisted/internet/abstract.py", line 416, in startReading
>      self.reactor.addReader(self)
>    File "/usr/local/lib/python2.7/site-packages/Calendar_and_Contacts_Server-4.2-py2.7-freebsd-9.1-RELEASE-amd64.egg/twext/internet/kqreactor.py", line 84, in addReader
>      self._updateRegistration(fd, KQ_FILTER_READ, KQ_EV_ADD|KQ_EV_ENABLE)
>    File "/usr/local/lib/python2.7/site-packages/Calendar_and_Contacts_Server-4.2-py2.7-freebsd-9.1-RELEASE-amd64.egg/twext/internet/kqreactor.py", line 74, in _updateRegistration
>      self._kq.control([ev], 0, 0)
> OSError: [Errno 9] Bad file descriptor
> ---
> Any help appreciated,
> Axel
> ---
> PGP-Key:29E99DD6  ☀ +49 151 2300 9283  ☀ computing @ chaos claudius
>
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