Date: Mon, 30 Nov 2009 15:43:01 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: UNIX domain sockets on nullfs still broken? Message-ID: <hf0lle$5mk$1@ger.gmane.org> In-Reply-To: <20091130142950.GA86528@logik.internal.network> References: <20091130142950.GA86528@logik.internal.network>
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xorquewasp@googlemail.com wrote:
> 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
I would expect to see this result from the jail since it's obviously a
Bad Idea, but does it work from the same (host) machine without the jail
in between (i.e. just the nullfs, no jails)?
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