Re: 1001 ptys useful?

H. Peter Anvin (hpa@transmeta.com)
8 Jul 1998 17:30:54 GMT

Followup to: <199807081030.GAA05559@jupiter.cs.uml.edu>
By author: "Albert D. Cahalan" <acahalan@cs.uml.edu>
In newsgroup: linux.dev.kernel
>
> Might any reasonable system use 1001 pty devices or more?
> What about 10001 pty devices? I need to determine how much
> space to allow for the TTY column in /bin/ps output.
>
> Right now I use 8 characters like Digital Unix does. That is
> enough for pts/9999. I'd like to save a character though, because
> some output formats (ps -lf) don't fit on an 80-column line.
>
> I've also been wondering why there isn't a new major number or 4.
> It would be good to _not_ share numbers between old-style and
> new-style pty devices, so that new-style apps won't grab all the
> devices accessible via old-style names. It would be really nice
> to keep all 256 old devices and have an additional 1024 new ones.
>

Patch is in the works; I should be handing it to Linus this week.

-hpa

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