Joonas Bergius • 2/12/2022

Programming pattern for ensuring a function is called as root

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The article discusses a programming pattern for system-level software where specific functions require root privileges. To avoid repetitive and error-prone privilege switching, the author proposes using an opaque token passed as a function argument. This leverages the type system to enforce, at compile time, that a function can only be called from a code path that has already entered a root context, improving code safety and clarity.

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#security #privilege escalation #type safety
Programming pattern for ensuring a function is called as root

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