Re: [PATCH 0/3] vnc: remove "change vnc TARGET" and QMP change command, support "-vnc help"

[Gerd Hoffmann]

On Wed, Jan 20, 2021 at 03:42:32PM +0100, Paolo Bonzini wrote:
> The real driver for these patches is to send all QemuOpts user input
> to qemu_opts_parse_noisily, for consistency in the command line
> parsing code and to effectively outlaw "help" and "?" QemuOpts
> suboptions.  vnc_parse is the only function that is still using
> qemu_opts_parse.

Should we maybe move vnc to qapi cmd line parsing instead?

> In order to remove the non-command-line callers of vnc_parse,
> I am removing the deprecated QMP change command but also its HMP
> veneer "change vnc TARGET", whose usecase is somewhat unclear to
> me.

Hmm.  It's been a few years ...

IIRC back when this was added the main use case was having a way to
enable/disable the vnc server.  Not sure this is still needed/useful.
These days you can effectively disable vnc access by expiring the
password (or not setting one in the first place) without re-configuring
the vnc server.  Also the race where qemu allowed passwordless connects
between start and password being set via monitor is long gone.

So, all in all I feel a bit uncomfortable dropping this without the
usual deprecation period.  No strong objections though.

take care,
  Gerd