nc 0.8.13

Access system calls directly
Documentation 
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/// Get a System V semphore set identifier.
pub unsafe fn semget(key: key_t, nsems: i32, semflg: i32) -> Result<i32, Errno> {
    let key = key as usize;
    let nsems = nsems as usize;
    let semflg = semflg as usize;
    syscall3(SYS_SEMGET, key, nsems, semflg).map(|ret| ret as i32)
}