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Add tests for CLONE_PIDFD_AUTOKILL:
- autokill_basic: Verify closing the clone3 pidfd kills the child.
- autokill_requires_pidfd: Verify AUTOKILL without CLONE_PIDFD fails.
- autokill_requires_autoreap: Verify AUTOKILL without CLONE_AUTOREAP
fails.
- autokill_rejects_thread: Verify AUTOKILL with CLONE_THREAD fails.
- autokill_pidfd_open_no_effect: Verify only the clone3 pidfd triggers
autokill, not pidfd_open().
- autokill_requires_cap_sys_admin: Verify AUTOKILL without CLONE_NNP
fails with -EPERM for an unprivileged caller.
- autokill_without_nnp_with_cap: Verify AUTOKILL without CLONE_NNP
succeeds with CAP_SYS_ADMIN.
Link: https://patch.msgid.link/20260226-work-pidfs-autoreap-v5-6-d148b984a989@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add tests for the new CLONE_NNP flag:
- nnp_sets_no_new_privs: Verify a child created with CLONE_NNP has
no_new_privs set while the parent does not.
- nnp_rejects_thread: Verify CLONE_NNP | CLONE_THREAD is rejected
with -EINVAL since threads share credentials.
- autoreap_no_new_privs_unset: Verify a plain CLONE_AUTOREAP child
does not get no_new_privs.
Link: https://patch.msgid.link/20260226-work-pidfs-autoreap-v5-5-d148b984a989@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Add tests for the new CLONE_AUTOREAP clone3() flag:
- autoreap_without_pidfd: CLONE_AUTOREAP without CLONE_PIDFD works
(fire-and-forget)
- autoreap_rejects_exit_signal: CLONE_AUTOREAP with non-zero
exit_signal fails
- autoreap_rejects_parent: CLONE_AUTOREAP with CLONE_PARENT fails
- autoreap_rejects_thread: CLONE_AUTOREAP with CLONE_THREAD fails
- autoreap_basic: child exits, pidfd poll works, PIDFD_GET_INFO returns
correct exit code, waitpid() returns -ECHILD
- autoreap_signaled: child killed by signal, exit info correct via pidfd
- autoreap_reparent: autoreap grandchild reparented to subreaper still
auto-reaps
- autoreap_multithreaded: autoreap process with sub-threads auto-reaps
after last thread exits
- autoreap_no_inherit: grandchild forked without CLONE_AUTOREAP becomes
a regular zombie
Link: https://patch.msgid.link/20260226-work-pidfs-autoreap-v5-4-d148b984a989@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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