attr: add in_group_or_capable()

In setattr_{copy,prepare}() we need to perform the same permission
checks to determine whether we need to drop the setgid bit or not.
Instead of open-coding it twice add a simple helper the encapsulates the
logic. We will reuse this helpers to make dropping the setgid bit during
write operations more consistent in a follow up patch.

Reviewed-by: Amir Goldstein <[email protected]>
Signed-off-by: Christian Brauner (Microsoft) <[email protected]>

0 files changed, 0 insertions, 0 deletions