Re: [PATCH v3] chardev: add path option for pty backend

[Peter Maydell]

On Thu, 18 Jul 2024 at 07:15, Markus Armbruster <armbru@redhat.com> wrote:
>
> Looks like this one fell through the cracks.
>
> Octavian Purdila <tavip@google.com> writes:
>
> > Add path option to the pty char backend which will create a symbolic
> > link to the given path that points to the allocated PTY.
> >
> > This avoids having to make QMP or HMP monitor queries to find out what
> > the new PTY device path is.
>
> QMP commands chardev-add and chardev-change return the information you
> want:
>
>     # @pty: name of the slave pseudoterminal device, present if and only
>     #     if a chardev of type 'pty' was created
>
> So does HMP command chardev-add.  HMP chardev apparently doesn't, but
> that could be fixed.
>
> So, the use case is basically the command line, right?

> The feature feels rather doubtful to me, to be honest.

The command line is an important use-case, though. Not every
user of QEMU is libvirt with a QMP/HMP connection readily
to hand that they would prefer to use for all configuration...

-- PMM