[Phelinofist]

Could something like this also be done via BPF?

[ARob109]

That’s how this[0] project mitigates e.g. CopyFail.

BPF LSM if you want to return -EPERM.

Or a kprobe that kills the process via bpf_send_signal() if BPF LSM isn’t enabled.

[0] https://github.com/cozystack/copy-fail-blocker#how-it-works