kauth_cred_dup
vnd->sc_cred = kauth_cred_dup(cred);
cred = kauth_cred_dup(l->l_cred);
*credpp = kauth_cred_dup(savecredp);
(*compnamepp)->cn_cred = kauth_cred_dup(savecompcredp);
compcredp = kauth_cred_dup(savecompcredp);
compcredp = compnamep->cn_cred = kauth_cred_dup(savecompcredp);
pcb->hp_cred = kauth_cred_dup(curlwp->l_cred);
sp->s_cred = kauth_cred_dup(cnp->cn_cred);
kauth_cred_t kauth_cred_dup(kauth_cred_t);
so->so_cred = kauth_cred_dup(cred);