On 2/19/21 1:23 PM, Lorenz Bauer wrote:
> On Fri, 19 Feb 2021 at 11:49, Eric Dumazet <eric.duma...@gmail.com> wrote:
>>
>>> + case SO_NETNS_COOKIE:
>>> + lv = sizeof(u64);
>>> + if (len < lv)
>>> + return -EINVAL;
>>
>> if (len != lv)
>> return -EINVAL;
>>
>> (There is no reason to support bigger value before at least hundred years)
>
> Sorry that was copy pasta from SO_COOKIE which uses the same check. I'll
> change it to your suggestion. Want me to fix SO_COOKIE as well?
Unfortunately it is too late for SO_COOKIE
Some applications might use len = 256, and just look at what the kernel
gives back.
Better be strict at the time a feature is added, instead of having
to maintain legacy stuff.
