nc 0.9.7

Access system calls directly
Documentation 
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/// Get capabilities of thread.
pub unsafe fn capget(
    hdrp: &mut cap_user_header_t,
    data: &mut cap_user_data_t,
) -> Result<(), Errno> {
    let hdrp_ptr = hdrp as *mut cap_user_header_t as usize;
    let data_ptr = data as *mut cap_user_data_t as usize;
    syscall2(SYS_CAPGET, hdrp_ptr, data_ptr).map(drop)
}