Re: [Qemu-devel] [PATCH v2 4/9] qemu-sockets: add error propagation to Unix socket functions

[Luiz Capitulino <lcapitulino@redhat.com>]

On Mon, 01 Oct 2012 21:07:52 +0200
Paolo Bonzini <pbonzini@redhat.com> wrote:

> Il 01/10/2012 19:17, Luiz Capitulino ha scritto:
> >> >      if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
> >> > -        fprintf(stderr, "bind(unix:%s): %s\n", un.sun_path, strerror(errno));
> >> > +        error_set(errp, QERR_SOCKET_BIND_FAILED);
> > This drops error information, making the error message worse. I believe
> > you have a reason to not use error_setg()?
> 
> I was waiting for the end of the discussion on errno to add
> error_setg_errno.

The decision was to not add errno now, right?

> > Also, I see that in some hunks you do something like:
> > 
> >   -            fd = unix_listen_opts(opts);
> >   +            fd = unix_listen_opts(opts, NULL);
> > 
> > This will break printing the error message to the user. It's fine by me if
> > you do this only temporarily (ie. this is fixed by the next or a later patch),
> > but want to double check that you're aware of it.
> 
> I want to avoid super-large patch series, so I would prefer to fix it
> later in the 1.3 development.

We at least need to have the patches flying, I don't think it's ok to
break error reporting like that.