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 <paulz...@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,  <smi...@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.
>>
>> --
>> +---------------------------------------------------------------+
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