ttyname() and linux+devfs

[Clifford Wolf]

On Thu, 29 Oct 1998, Martin von Loewis wrote:

> > /dev/vc/*, my cua devices are /dev/cua/* and so on. It would be great if
> > the ttyname function could make a recursive scan thru the compleate /dev
> > directory structure instead of lokking only in /dev/ and /dev/pts/.
> 
> Why not use /proc/self/fd/0 instead?

That's a good question. Why don't making just a readlink() on
/proc/self/fd/%d (where %d is the fd number)? Would be much faster
than scanning /dev and works with all /dev structures ...

It would solve the symlink/real-device problem too: afaik the symlinks
in /proc/self/fd/ point to the filenames which are passed to open() - and
this are the filenames we would like to know.

 - clifford

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