Function smbc_setFunctionAuthDataWithContext 

pub unsafe extern "C" fn smbc_setFunctionAuthDataWithContext(
    c: *mut SMBCCTX,
    _fn: smbc_get_auth_data_with_context_fn,
)

Installs the context-aware authentication callback for c.

Safety

c must be valid and uninitialized. The callback must uphold the native callback contract.