From: Aleksa Sarai
> Sent: 25 July 2023 17:36
...
> We almost certainly want to support AT_EMPTY_PATH at the same time.
> Otherwise userspace will still need to go through /proc when trying to
> chmod a file handle they have.
That can't be allowed.
Just because a process has a file open and write access to
the directory that contains it doesn't mean they are allowed
to change the file permissions.
They also need directory search access from a directory
they have open through to the containing directory.
David
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