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

> 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

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