Re: [Qemu-devel] [PATCH v3 12/23] linux-user: Call qcrypto_init if not using -seed

["Daniel P. Berrangé" <berrange@redhat.com>]

On Mon, Apr 15, 2019 at 12:23:18PM +0200, Philippe Mathieu-Daudé wrote:
> On 4/13/19 8:44 AM, Richard Henderson wrote:
> > On 4/10/19 11:49 PM, Philippe Mathieu-Daudé wrote:
> >>> -    if (seed_optarg != NULL) {
> >>> -        qemu_guest_random_seed_main(seed_optarg, &error_fatal);
> >>> +    {
> >> Since 7be41675f7c we use gnu99 C, so this extra block indentation can be
> >> removed.
> >>
> >>> +        Error *err = NULL;
> >>> +        if (seed_optarg != NULL) {
> >>> +            qemu_guest_random_seed_main(seed_optarg, &err);
> >>> +        } else {
> >>> +            /* ??? Assumes qcrypto is only used by qemu_guest_getrandom.  */
> >>> +            qcrypto_init(&err);
> >>> +        }
> >>> +        if (err) {
> >>> +            error_reportf_err(err, "cannot initialize crypto: ");
> >>> +            exit(1);
> >>> +        }
> >>>      }
> > 
> > I could, but it also limits the scope, which is of more importance to variables
> > who have their address taken.  It means that their storage could (in theory) be
> > shared with objects not overlapping in scope.
> 
> Fine then.
> 
> I think your '???' comment is appropriate but I'd rather let Daniel
> opinate. Except that comment, for the rest:

In linux-user context, afaik, the random APIs are the only stuff that
will be used, none of the hash or cipher stuff is needed.

> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> 

Regards,
Daniel
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