Struct SandboxPolicy 

pub struct SandboxPolicy {
    pub max_memory_pages: u32,
    pub fuel_limit: u64,
    pub allow_filesystem: bool,
    pub allow_env_vars: bool,
    pub allow_network_sockets: bool,
}

Policy describing what resources a Wasm guest may use and the hard limits applied at runtime.

Limits (max_memory_pages, fuel_limit) are enforced when building stores and memory via WasmEngine. Capability flags (allow_*) express intent for host integrations; by default all are false so filesystem, environment, and network access are denied unless the embedding layer opts in.

Fields

max_memory_pages: u32

Maximum number of 64 KiB Wasm memory pages the guest may grow to (default: 256 → 16 MiB).

fuel_limit: u64

Maximum Wasm “fuel” (instruction budget) for a single [Store] before execution stops.

allow_filesystem: bool

When true, the embedding may expose filesystem-backed host APIs to the guest.

allow_env_vars: bool

When true, the embedding may expose environment variable access to the guest.

allow_network_sockets: bool

When true, the embedding may expose network socket APIs to the guest.

Trait Implementations

impl Clone for SandboxPolicy

fn clone(&self) -> SandboxPolicy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for SandboxPolicy

fn default() -> Self

Returns the default policy: 256 memory pages (16 MiB cap), ~500M instruction fuel, all allow_* flags false.