selftests/bpf: Add tests for write-only stacks/queues
For write-only stacks and queues bpf_map_update_elem should be allowed, but bpf_map_lookup_elem and bpf_map_lookup_and_delete_elem should fail with EPERM. Signed-off-by:Anton Protopopov <a.s.protopopov@gmail.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200527185700.14658-6-a.s.protopopov@gmail.com Signed-off-by:
Alexei Starovoitov <ast@kernel.org>
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1ea0f912
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