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Isolation of internal kernel modules and drivers using language-level type and module systems.
Distinct from Module Isolation: Uses language safety (Rust) for internal driver isolation rather than unmounting modules from namespaces.
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Tock is a secure embedded operating system and microcontroller kernel designed to isolate untrusted applications and drivers. It functions as a memory-safe process isolator that uses a combination of hardware memory protection and language-level type safety to execute mutually distrustful applications on bare metal. The system distinguishes itself through a hardware abstraction layer that decouples high-level components from specific microcontroller implementations using standardized traits. It further employs a virtualization layer to allow multiple independent software components to share a
Uses a language sandbox to protect internal modules and drivers from each other without incurring hardware overhead.