spawn: add direct Landlock policies#15504
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Add a selectable --sandbox-actions-backend option with auto, bwrap, and landlock backends. Implement a Landlock wrapper/internal command that keeps the shared cache read-only, keep bwrap available explicitly, and factor shared program lookup helpers into bin Util. Add cram coverage for bwrap/Landlock shared-cache policies and backend selection. Signed-off-by: Rudi Grinberg <me@rgrinberg.com>
Move the typed write-policy and ruleset implementation into Stdune and let Spawn install a prepared Landlock ruleset directly in the child before exec. Keep the internal wrapper as a black-box test interface. Signed-off-by: Ali Caglayan <alizter@gmail.com>
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The bindings look good, but I think this is still relying on action runners. That is something I prefer to avoid at this time. I'll incorporate some the binding work from here though. |
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This is on top of #15231, adding landlock bindings for spawn.