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| author | Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> | 2018-10-09 03:04:49 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-10-10 06:52:20 +0200 |
| commit | 509db2833e0ddac7faf6e7d2dd6e7f85c98fbee0 (patch) | |
| tree | 3f3c6e718a575fc14d2292a0d08733c0307e3ad2 /fs | |
| parent | bpf: btf: Fix a missing check bug (diff) | |
| download | linux-509db2833e0ddac7faf6e7d2dd6e7f85c98fbee0.tar.xz linux-509db2833e0ddac7faf6e7d2dd6e7f85c98fbee0.zip | |
bpf: error handling when map_lookup_elem isn't supported
The error value returned by map_lookup_elem doesn't differentiate
whether lookup was failed because of invalid key or lookup is not
supported.
Lets add handling for -EOPNOTSUPP return value of map_lookup_elem()
method of map, with expectation from map's implementation that it
should return -EOPNOTSUPP if lookup is not supported.
The errno for bpf syscall for BPF_MAP_LOOKUP_ELEM command will be set
to EOPNOTSUPP if map lookup is not supported.
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>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions