From: Dmitry Torokhov <dmitry.torok...@gmail.com> Date: Tue, 16 Aug 2016 15:33:10 -0700
> There are objects in /sys hierarchy (/sys/class/net/) that logically belong > to a namespace/container. Unfortunately all sysfs objects start their life > belonging to global root, and while we could change ownership manually, > keeping tracks of all objects that come and go is cumbersome. It would > be better if kernel created them using correct uid/gid from the beginning. > > This series changes kernfs to allow creating object's with arbitrary > uid/gid, adds get_ownership() callback to ktype structure so subsystems > could supply their own logic (likely tied to namespace support) for > determining ownership of kobjects, and adjusts sysfs code to make use of > this information. Lastly net-sysfs is adjusted to make sure that objects in > net namespace are owned by the root user from the owning user namespace. > > Note that we do not adjust ownership of objects moved into a new namespace > (as when moving a network device into a container) as userspace can easily > do it. I need some domain experts to review this series please. Thank you.
