bpf: return EOPNOTSUPP when map lookup isn't supported

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Return ERR_PTR(-EOPNOTSUPP) from map_lookup_elem() methods of below
map types:
- BPF_MAP_TYPE_PROG_ARRAY
- BPF_MAP_TYPE_STACK_TRACE
- BPF_MAP_TYPE_XSKMAP
- BPF_MAP_TYPE_SOCKMAP/BPF_MAP_TYPE_SOCKHASH

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Prashant Bhole 2018-10-09 10:04:50 +09:00 • committed by Alexei Starovoitov

parent 509db2833e

commit 3b4a63f674

4 changed files with 4 additions and 4 deletions

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2

kernel/bpf/arraymap.c

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2

kernel/bpf/sockmap.c

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2

kernel/bpf/stackmap.c

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2

kernel/bpf/xskmap.c

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