krb5_preauth_ops
(krb5_preauthtype type, const krb5_preauth_ops **Preauth_proc);
const krb5_preauth_ops *ops;
const krb5_preauth_ops * ops;
find_pa_system(krb5_preauthtype type, const krb5_preauth_ops **preauth)
const krb5_preauth_ops *ap = preauth_systems;
static const krb5_preauth_ops preauth_systems[] = {