chkiq
chkiq(ip, 1, l->l_cred, FORCE);
chkiq(ip, -1, l->l_cred, 0);
error = chkiq(ip, 1, cred, 0);
int chkiq(struct inode *, int32_t, kauth_cred_t, int);
(void)chkiq(ip, -1, NOCRED, 0);
(void) chkiq(ip, -1, cred, 0);
if ((error = chkiq(ip, 1, cred, 0)) == 0)
(void) chkiq(ip, 1, cred, FORCE);