selftests/bpf: Fix selftest build with old libc
authorAlexei Starovoitov <ast@kernel.org>
Fri, 6 Nov 2020 20:33:46 +0000 (12:33 -0800)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 6 Nov 2020 20:33:46 +0000 (12:33 -0800)
commitf055f355faf1991ef4e6b3c3517f8f2fc247805e
tree51454b700e4f63a57285fa3c173c68e7dcb656cf
parent4170bc6baa5446e1d85e0b7647ea54ba72aa85c4
selftests/bpf: Fix selftest build with old libc

pidfd_open was added in 2019. Some versions of libc library don't define it.
Define it manually if it's not available.

Reported-by: Sergei Iudin <siudin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
tools/testing/selftests/bpf/prog_tests/test_local_storage.c