kauth_cred_seteuid
kauth_cred_seteuid(l->l_cred, attr->va_uid);
kauth_cred_seteuid(ncred, e);
kauth_cred_seteuid(cred, kauth_cred_getuid(l->l_cred));
kauth_cred_seteuid(credp, uid);
kauth_cred_seteuid(credp, (uid_t)NOBODY);
kauth_cred_seteuid(acred, uid);
kauth_cred_seteuid(nuidp->nu_cr, kauth_cred_geteuid(cred));
kauth_cred_seteuid(cred, saved_uid);
kauth_cred_seteuid(nd->nd_cr, uid);
kauth_cred_seteuid(cr, attrs->va_uid);
kauth_cred_seteuid(cred, uid);
void kauth_cred_seteuid(kauth_cred_t, uid_t);
kauth_cred_seteuid(cred, uid);