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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