Am Donnerstag, 20. November 2014, 14:02:21 schrieb Stephan Mueller:
Hi Stephan,
> Am Donnerstag, 20. November 2014, 12:46:50 schrieb Herbert Xu:
>
> Hi Herbert,
>
> > On Thu, Nov 20, 2014 at 05:23:23AM +0100, Stephan Mueller wrote:
> > > Here is the code:
> > >
> > > static int crypto_report(struct sk_buff *in_skb, struct nlmsghdr
> > > *in_nlh,
> > >
> > > struct nlattr **attrs)
> > >
> > > {
> > > ...
> > >
> > > if (!p->cru_driver_name[0])
> > >
> > > return -EINVAL;
> >
> > OK let's fix this.
> >
> > crypto: user - Allow get request with empty driver name
> >
> > Currently all get requests with an empty driver name fail with
> > EINVAL. Since most users actually want to supply an empty driver
> > name this patch removes this check.
> >
> > Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
>
> Acked-by: Stephan Mueller <smueller@xxxxxxxxxx>
Although I acked the patch, it just occurred that your change modifies the
user space interface such that you now cannot use a driver name any more.
>
> > diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
> > index e2a34fe..0bb30ac 100644
> > --- a/crypto/crypto_user.c
> > +++ b/crypto/crypto_user.c
> > @@ -201,10 +201,7 @@ static int crypto_report(struct sk_buff *in_skb,
> > struct nlmsghdr *in_nlh, if (!null_terminated(p->cru_name) ||
> > !null_terminated(p->cru_driver_name)) return -EINVAL;
> >
> > - if (!p->cru_driver_name[0])
> > - return -EINVAL;
> > -
> > - alg = crypto_alg_match(p, 1);
> > + alg = crypto_alg_match(p, 0);
What about the following
if (p->cru_driver_name[0]
alg = crypto_alg_match(p, 1);
else
alg = crypto_alg_match(p, 0);
> >
> > if (!alg)
> >
> > return -ENOENT;
> >
> > Cheers,
--
Ciao
Stephan
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