selftests/bpf: Test BPF_CGROUP_SYSCTL

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Add unit test for BPF_PROG_TYPE_CGROUP_SYSCTL program type.

Test that program can allow/deny access.
Test both valid and invalid accesses to ctx->write.

Example of output:
  # ./test_sysctl
  Test case: sysctl wrong attach_type .. [PASS]
  Test case: sysctl:read allow all .. [PASS]
  Test case: sysctl:read deny all .. [PASS]
  Test case: ctx:write sysctl:read read ok .. [PASS]
  Test case: ctx:write sysctl:write read ok .. [PASS]
  Test case: ctx:write sysctl:read write reject .. [PASS]
  Summary: 6 PASSED, 0 FAILED

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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This commit is contained in:

Andrey Ignatov 2019-03-08 15:08:21 -08:00 • committed by Alexei Starovoitov

parent 7007af63da

commit 1f5fa9ab6e

2 changed files with 293 additions and 1 deletions

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3

tools/testing/selftests/bpf/Makefile

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291

tools/testing/selftests/bpf/test_sysctl.c

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