seccomp: set SPEC_ALLOW by default #3581
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Commit 58ea21d added support for seccomp flags such as SPEC_ALLOW, but it does not work as expected, because since commit 7a8d716 we do not use libseccomp-golang's Load(), but handle flags separately in patchbfp. This fixes setting SPEC_ALLOW flag. Add a comment to not forget to amend filterFlags when adding new flags. Signed-off-by: Kir Kolyshkin <[email protected]>
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Add a debug print of seccomp flags value, so the test can check those (without using something like strace, that is). Amend the flags setting test with the numeric values expected, and the logic to check those. Signed-off-by: Kir Kolyshkin <[email protected]>
If no seccomps flags are set in OCI runtime spec (not even the empty set), set SPEC_ALLOW by default. Otherwise, use the flags set. This mimics the crun behavior, and makes runc seccomp performance on par with crun. Signed-off-by: Kir Kolyshkin <[email protected]>
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CentOS 7 failed with:
OK, we should check if the flag is supported by the running kernel/libseccomp before adding it. |
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Closing in favor of #3588 (which does the same thing and more). |
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Did I say close? |
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If no seccomps flags are set in OCI runtime spec (not even the empty
set), set SPEC_ALLOW by default. Otherwise, use the flags set.
This mimics the crun behavior, and makes runc seccomp performance on par
with crun.
The test case added in #3580 checks all the cases:
This currently includes #3580, thus a draft pending its merge.