[Devel] [RFC rh7 v4] ve/tty: vt -- Implement per VE support for console and terminals

[Cyrill Gorcunov]

On Thu, Aug 27, 2015 at 03:58:13PM +0300, Vladimir Davydov wrote:
> On Mon, Aug 24, 2015 at 02:08:56PM +0300, Cyrill Gorcunov wrote:
> > On Mon, Aug 24, 2015 at 01:34:18PM +0300, Vladimir Davydov wrote:
> ...
> > > If a process inside a container closes and then immediately reopens a
> > > vtty, it does not expect to get -EIO simply because it is advancing too
> > > fast.
> > 
> > How it that? I mean, application (getty and such) always care about eio
> > and such things.
> 
> No. If tty_open() returns -EIO mingetty dies:
> 
> : /sbin/mingetty[845]: console: cannot open tty: Input/output error
> 
> It will be respawned in a moment though, but it is ugly.

It doesnt matter how some particular program (getty or whatever)
reacts on tty open error. By "care" I mean to either plain exit
and rely on service to be restarted, or a program may sleep sometime
and try again. What I mean is that this is absolutely valid to
obtain -eio here. Anyway this should be addressed in a new version
of a patch. Please give it a glance once time permit.

	Cyrill