[9fans] puzzling 9P server / 9pcon interaction

[9fans] puzzling 9P server / 9pcon interaction

[Skip Tavakkolian]

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i'm trying to test a new 9P fs with 9pcon. after posting the file server's
fd to /srv, it can be mounted (e.g. mount /srv/foo /n/foo) and walked
correctly.  trying 9pcon on the same fd (e.g. aux/9pcon /srv/foo) results
in "inappropriate use of fd".

any ideas?  fyi, the 9p code is from scartch based on re-re-reading of
0intro(5) docs, so it is entirely possible i missed something subtle that
9pcon doesn't tolerate.

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Re: [9fans] puzzling 9P server / 9pcon interaction

[Charles Forsyth]

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On 1 April 2015 at 00:23, Skip Tavakkolian <skip.tavakkolian@gmail.com>
wrote:

>  trying 9pcon on the same fd (e.g. aux/9pcon /srv/foo) results in
> "inappropriate use of fd".


You aren't allowed to read or write an fd directly once it has been used
for 9P traffic by mount (devmnt).

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Re: [9fans] puzzling 9P server / 9pcon interaction

[Skip Tavakkolian]

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Thanks Charles.  i had looked at  /sys/src/9/port/sysfile.c, but couldn't
quite connect the dots.

On Wed, Apr 1, 2015 at 7:03 AM, Charles Forsyth <charles.forsyth@gmail.com>
wrote:

>
> On 1 April 2015 at 00:23, Skip Tavakkolian <skip.tavakkolian@gmail.com>
> wrote:
>
>>  trying 9pcon on the same fd (e.g. aux/9pcon /srv/foo) results in
>> "inappropriate use of fd".
>
>
> You aren't allowed to read or write an fd directly once it has been used
> for 9P traffic by mount (devmnt).
>

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