Re: [PATCH v3 1/6] io_uring/mock: add basic infra for test mock files

[Pavel Begunkov <asml.silence@gmail.com>]

On 5/30/25 12:31, Jens Axboe wrote:
> On 5/30/25 2:38 AM, Pavel Begunkov wrote:
>> io_uring commands provide an ioctl style interface for files to
>> implement file specific operations. io_uring provides many features and
>> advanced api to commands, and it's getting hard to test as it requires
>> specific files/devices.
>>
>> Add basic infrastucture for creating special mock files that will be
>> implementing the cmd api and using various io_uring features we want to
>> test. It'll also be useful to test some more obscure read/write/polling
>> edge cases in the future.
> 
> Do we want to have the creation of a mock file be a privileged
> operation?

It doesn't do anything that would warrant that, maybe just yet.
Do you mean from the security perspective? i.e. making sure a
user can't exploit it if there is anything to be exploited.
I'd really hope nobody would compile this thing for non-test
kernels. Maybe I should make it dependent on lockdep to enforce
it.

-- 
Pavel Begunkov