[9fans] ARM 9pfuse broken?

[9fans] ARM 9pfuse broken?

[smiley]

Hello,

Are there any known bugs in 9pfuse on ARM?  I can mount a vac file
system OK with it, but trying to list files on it causes:

 unexpected open flags 02444000
 ls: cannot open directory /mnt/foo: Permission denied

Trying to read files:

 unexpected open flags 0400000
 cat: /mnt/foo/bar.txt: Permission denied

But walk/statting seem to succeed OK.  I'm planning to debug a bit
deeper, but figured I'd give a shout out, in case this bug is already
known, and to see if there was already a patch for it floating around.

This is an ARMv7 OMAP4 Cortex-A9, in case that's any clue.

--
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Re: [9fans] ARM 9pfuse broken?

[Pavel Zholkover]

I've also encountered this on my synology DS411 linux based kirkwood
NAS. If I remember correctly I saw a comment by Russ regarding
weird/unhandled flags being passed to the open syscall.

My workaround was just to compile a 9p kernel module and mount the
vacfs export with it.

On Thu, Mar 22, 2012 at 6:46 PM,  <smiley@icebubble.org> wrote:
> Hello,
>
> Are there any known bugs in 9pfuse on ARM?  I can mount a vac file
> system OK with it, but trying to list files on it causes:
>
>  unexpected open flags 02444000
>  ls: cannot open directory /mnt/foo: Permission denied
>
> Trying to read files:
>
>  unexpected open flags 0400000
>  cat: /mnt/foo/bar.txt: Permission denied
>
> But walk/statting seem to succeed OK.  I'm planning to debug a bit
> deeper, but figured I'd give a shout out, in case this bug is already
> known, and to see if there was already a patch for it floating around.
>
> This is an ARMv7 OMAP4 Cortex-A9, in case that's any clue.
>
> --
> +---------------------------------------------------------------+
> |Smiley       <smiley@icebubble.org>    PGP key ID:    BC549F8B |
> |Fingerprint: 9329 DB4A 30F5 6EDA D2BA  3489 DAB7 555A BC54 9F8B|
> +---------------------------------------------------------------+
>

Re: [9fans] ARM 9pfuse broken?

[Pavel Zholkover]

I've looked at http://code.swtch.com/plan9port/src/9574d432c889/src/cmd/9pfuse/main.c#cl-580
and O_NOFOLLOW == 0400000 handling was added in
http://code.swtch.com/plan9port/changeset/43f43652132d
So maybe you can recompile a more recent version ?

On Thu, Mar 22, 2012 at 8:30 PM, Pavel Zholkover <paulzhol@gmail.com> wrote:
> I've also encountered this on my synology DS411 linux based kirkwood
> NAS. If I remember correctly I saw a comment by Russ regarding
> weird/unhandled flags being passed to the open syscall.
>
> My workaround was just to compile a 9p kernel module and mount the
> vacfs export with it.
>
> On Thu, Mar 22, 2012 at 6:46 PM,  <smiley@icebubble.org> wrote:
>> Hello,
>>
>> Are there any known bugs in 9pfuse on ARM?  I can mount a vac file
>> system OK with it, but trying to list files on it causes:
>>
>>  unexpected open flags 02444000
>>  ls: cannot open directory /mnt/foo: Permission denied
>>
>> Trying to read files:
>>
>>  unexpected open flags 0400000
>>  cat: /mnt/foo/bar.txt: Permission denied
>>
>> But walk/statting seem to succeed OK.  I'm planning to debug a bit
>> deeper, but figured I'd give a shout out, in case this bug is already
>> known, and to see if there was already a patch for it floating around.
>>
>> This is an ARMv7 OMAP4 Cortex-A9, in case that's any clue.
>>
>> --
>> +---------------------------------------------------------------+
>> |Smiley       <smiley@icebubble.org>    PGP key ID:    BC549F8B |
>> |Fingerprint: 9329 DB4A 30F5 6EDA D2BA  3489 DAB7 555A BC54 9F8B|
>> +---------------------------------------------------------------+
>>