UNIX domain sockets on nullfs still broken?

[xorquewasp at googlemail.com]

jackd (audio/jack) creates a directory in /tmp with a UNIX domain socket
in it. Clients connect to this socket to communicate with the server.

$ jackd -d oss -r 44100 -p 128
$ ls -alF /tmp/jack-11001/default
total 4
drwx------  2 xw  wheel  512 30 Nov 14:19 ./
drwx------  3 xw  wheel  512 30 Nov 14:19 ../
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-0|
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-1|
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-2|
srwxr-xr-x  1 xw  wheel    0 30 Nov 14:19 jack_0=
srwxr-xr-x  1 xw  wheel    0 30 Nov 14:19 jack_ack_0=

$ sudo mount_nullfs /tmp/ /jail/k4m/tmp

In the jail:

k4m$ ls -alF /tmp/jack-11001/default
drwx------  2 xw  wheel  512 30 Nov 14:19 ./
drwx------  3 xw  wheel  512 30 Nov 14:19 ../
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-0|
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-1|
prw-r--r--  1 xw  wheel    0 30 Nov 14:19 jack-ack-fifo-54211-2|
srwxr-xr-x  1 xw  wheel    0 30 Nov 14:19 jack_0=
srwxr-xr-x  1 xw  wheel    0 30 Nov 14:19 jack_ack_0=

k4m$ ktrace jack_showtime
jack server not running?

k4m$ kdump | grep '/tmp/jack-11001'
 76030 initial thread STRU  struct sockaddr { AF_LOCAL, /tmp/jack-11001/default/jack_0 }
 76030 initial thread NAMI  "/tmp/jack-11001/default/jack_0"
 76030 initial thread RET   connect -1 errno 61 Connection refused

$ uname -a
FreeBSD viper.internal.network 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC 2009     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

xw