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Guest test binary exercises all 8 CLONE_NEW* flag individually, combined flag, fail-closed EPERM path for unreadable clone_args, and a plain-fork sanity check proving clone3 routes through the supervisor (not the BPF deny list). Integration harness runs with --forward-verbose and matches supervisor's "clone3 denied: namespace flags" log line, so regression check proves active supervisor interception rather than relying on host-kernel EPERM semantics. Change-Id: I45a680f5f2b31978abb792f03351873c618e5ed9
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Guest test binary exercises all 8 CLONE_NEW* flag individually, combined flag, fail-closed EPERM path for unreadable clone_args, and a plain-fork sanity check proving clone3 routes through the supervisor (not the BPF deny list).
Integration harness runs with --forward-verbose and matches supervisor's "clone3 denied: namespace flags" log line, so regression check proves active supervisor interception rather than relying on host-kernel EPERM semantics.
Change-Id: I45a680f5f2b31978abb792f03351873c618e5ed9
Summary by cubic
Add clone3 namespace-flag regression tests to verify the supervisor blocks all
CLONE_NEW*flags and fails closed (EPERM) on unreadableclone_args, with a plain-fork success check. The harness now validates 9 denials via thekbox: clone3 denied: namespace flagslog.tests/guest/clone3-test.ccovering eachCLONE_NEW*flag, a combined case, unreadableclone_args-> EPERM, and a plainclone3fork success.scripts/run-tests.shto runclone3-testin seccomp mode with--forward-verbose, count 9 denial logs, and skip if the binary is missing in the rootfs.Written for commit 0000de4. Summary will update on new commits.