envctrl_close
envctrl_close, /* cb_close */
static int envctrl_close(dev_t, int, int, cred_t *);
putq, NULL, envctrl_open, envctrl_close, NULL, &envctrlinfo, NULL
envctrl_wput, NULL, envctrl_open, envctrl_close,
static int envctrl_close(queue_t *, int, cred_t *);