[Unionfs] What branch is a file from?

[David P. Quigley]

I can't be sure if it still exists but we use to have an IOCTL to tell
what branch a file was pulled from. The unionfs 2.0 developers can
probably comment on if they kept it but I know we had one in unionfs
1{.*}.

Dave Quigley

On Mon, 2007-10-15 at 14:25 -0700, Robin Lee Powell wrote:
> (Fixing up the subject line; very sorry.)
> 
> I have a slightly odd use case in mind, one in which it would be
> very useful to be able to tell which branch a particular file is
> "from" (that is, the highest priority branch the file first appears
> in).
> 
> Is this at all possible?  I didn't see anything like this is in the
> various tutorials and such online.
> 
> -Robin
>