Re: [sshfs] sshfs: pwd writes to standard err not to standard out - error when starting acroread

Hi Miklos,

thank you very much for your feedback. Please find attached the outputs of 
executing

pwd

and

/bin/pwd

Regards

Bernd

On Thursday 14 December 2006 12:14, Miklos Szeredi wrote:
> > we are currently experimenting with replacing client sided nfs mounts
> > with sshfs, since this has significant security advantages. At a first
> > glance, sshfs seams to be really a great alternative. Thank you very much
> > for your great work!
> >
> > Of course there are still some open issues. The feature request for
> > implementing locking was also one of the first observations when trying
> > to use sshfs for mounting remote home directories ;-) since this prevents
> > KDE from running properly.
>
> This is a limitation of the SFTP protcol, not the client.  Protocol
> changes would require changes to the sftp-server from the OpenSSH
> package as well, which is currently outside the scope of this project.
>
> > When testing various applications, I found that acroread (version 7.0.8)
> > does not work properly if it is invoked from an sshfs mounted directory.
> > After looking at the wrapper script, I found out that the problem is that
> > pwd prints it's output to standard error instead standard out: The
> > acroread wrapper script contains the line
> >
> > cwd="`/bin/pwd 2> /dev/null`"
> >
> > If this is invoked on a local file system, cwd is assigned the correct
> > value. If it is invoked within a sshfs mounted directory, cwd will be
> > empty since pwd writes the output to standard error.
> >
> > Yet another very strange observation: if I issue the command
> >
> > $ /bin/pwd
> >
> > I get the error message
> >
> > /bin/pwd: couldn't find directory entry in `..' with matching i-node
> >
> > using
> >
> > pwd
> >
> > however returns on standard error the current working directory ... This
> > is even more strange, since pwd is actually /bin/pwd.
>
> can you try
>
>   strace /bin/pwd
>
> Thanks,
> Miklos

bin_pwd_strace.txt
Description: Text document

pwd_strace.txt
Description: Text document

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