nc 0.9.8

Access system calls directly
Documentation 
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/// Retrieves the mask and policy from the object specified by `level`,
/// `which` and `id` and stores it in the space provided by `mask` and `policy`.
pub unsafe fn cpuset_getdomain(
    level: cpulevel_t,
    which: cpuwhich_t,
    id: id_t,
    domainset_size: size_t,
    mask: &mut domainset_t,
    policy: &mut i32,
) -> Result<(), Errno> {
    let level = level as usize;
    let which = which as usize;
    let id = id as usize;
    let mask_ptr = core::ptr::from_mut(mask) as usize;
    let policy_ptr = core::ptr::from_mut(policy) as usize;
    unsafe {
        syscall6(
            SYS_CPUSET_GETDOMAIN,
            level,
            which,
            id,
            domainset_size,
            mask_ptr,
            policy_ptr,
        )
        .map(drop)
    }
}