kauth_cred_ismember_gid
error = kauth_cred_ismember_gid(cred, gid, &ismember);
if (kauth_cred_ismember_gid(cred, uuc->cr_groups[i],
if (kauth_cred_ismember_gid(cred,
error = kauth_cred_ismember_gid(cred, cur_gid,
error = kauth_cred_ismember_gid(cred, new_gid,
int kauth_cred_ismember_gid(kauth_cred_t, gid_t, int *);