nc 0.9.7

Access system calls directly
Documentation
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/// Set the per-thread override identity.
pub unsafe fn settid(uid: uid_t, gid: gid_t) -> Result<(), Errno> {
    let uid = uid as usize;
    let gid = gid as usize;
    syscall2(SYS_SETTID, uid, gid).map(drop)
}