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Check that a successful landlock_restrict_self(2) call with LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS sets no_new_privs without a prior prctl(2) call nor CAP_SYS_ADMIN, that a failed call from both an invalid ruleset and hitting the layer maximum leaves the attribute unchanged, and that LANDLOCK_RESTRICT_SELF_TSYNC extends it to sibling threads. Also check that this flag requires a ruleset. Turn the multi_threaded_success test into a multi_threaded fixture with success, no_new_privs, and no_new_privs_max_layers variants to factor out the threading code. Finally, rename restrict_self_fd_logging_flags to restrict_self_fd_flags, and restrict_self_logging_flags to restrict_self_flags to indicate that non-logging flags are now tested. Test coverage for security/landlock is 91.8% of 2373 lines according to LLVM 22. Signed-off-by: Justin Suess <utilityemal77@gmail.com> Link: https://patch.msgid.link/20260809154544.1253100-4-utilityemal77@gmail.com Signed-off-by: Mickaël Salaün <mic@digikod.net> |
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