Re: [Qemu-devel] vnc port selection

[Jamie Lokier <jamie@shareable.org>]

Avi Kivity wrote:
> Anthony Liguori wrote:
> >
> >>Alternatively, have the management application pass an fd denoting 
> >>the socket.
> >
> >If you are allocating the ports in the management tool, then just tell 
> >QEMU what port to open up.  I don't think you gain anything passing an 
> >fd.
> >
> 
> It prevents races, allows listening on non-traditional sockets (vnc over 
> unix-domain), and allows privilege separation.

Agreed: races are particularly irksome.

I have the same problem in another application, where one program
allocates a fee port, but another (SSH tunnel) opens it.  It's very
annoying that the second program fails from time to time, due to the
race.

-- Jamie