Re: [PATCH v6 02/16] chardev: introduce cdev_get_by_path()

Sagi Grimberg
2019-07-25T19:43:38Z

>> So, as was kind of alluded to in another part of the thread, what are
>> you doing about permissions?  It seems that any user/group permissions
>> are out the window when you have the kernel itself do the opening of the
>> char device, right?  Why is that ok?  You can pass it _any_ character
>> device node and away it goes?  What if you give it a "wrong" one?  Char
>> devices are very different from block devices this way.
>
> We could condition any configfs operation on capable(CAP_NET_ADMIN) to
> close that hole for now..

s/NET/SYS/...