Struct wasmtime_runtime::mpk::ProtectionMask

pub struct ProtectionMask(/* private fields */);

A bit field indicating which protection keys should be allowed and disabled.

The internal representation makes it easy to use ProtectionMask directly with the PKRU register. When bits n and n+1 are set, it means the protection key is not allowed (see the PKRU write and access disabled bits).

Implementations

impl ProtectionMask

pub fn all() -> Self

Allow access from all protection keys.

pub fn zero() -> Self

Only allow access to memory protected with protection key 0; note that this does not mean “none” but rather allows access from the default kernel protection key.

pub fn or(self, pkey: ProtectionKey) -> Self

Include pkey as another allowed protection key in the mask.