int
wskbd_mux_open(struct wsevsrc *me, struct wseventvar *evp)
{
struct wskbd_softc *sc = (struct wskbd_softc *)me;
if (sc->sc_dying)
return (EIO);
if (sc->sc_base.me_evp != NULL)
return (EBUSY);
return (wskbd_do_open(sc, evp));
}
int
wskbdopen(dev_t dev, int flags, int mode, struct proc *p)
{
struct wskbd_softc *sc;
struct wseventvar *evar;
int unit, error;
unit = minor(dev);
if (unit >= wskbd_cd.cd_ndevs || /* make sure it was attached */
(sc = wskbd_cd.cd_devs[unit]) == NULL)
return (ENXIO);
#if NWSMUX > 0
DPRINTF(("wskbdopen: %s mux=%p p=%p\n", sc->sc_base.me_dv.dv_xname,
sc->sc_base.me_parent, p));
#endif
if (sc->sc_dying)
return (EIO);
if ((flags & (FREAD | FWRITE)) == FWRITE) {
/* Not opening for read, only ioctl is available. */
return (0);
}
#if NWSMUX > 0
if (sc->sc_base.me_parent != NULL) {
/* Grab the keyboard out of the greedy hands of the mux. */
DPRINTF(("wskbdopen: detach\n"));
wsmux_detach_sc(&sc->sc_base);
}
#endif
if (sc->sc_base.me_evp != NULL)
return (EBUSY);
evar = &sc->sc_base.me_evar;
wsevent_init(evar);
evar->io = p->p_p;
error = wskbd_do_open(sc, evar);
if (error) {
DPRINTF(("wskbdopen: %s open failed\n",
sc->sc_base.me_dv.dv_xname));
sc->sc_base.me_evp = NULL;
wsevent_fini(evar);
}
return (error);
}
int
wskbdopen(dev_t dev, int flags, int mode, struct lwp *l)
{
struct wskbd_softc *sc = device_lookup_private(&wskbd_cd, minor(dev));
struct wseventvar *evar;
int error;
if (sc == NULL)
return (ENXIO);
#if NWSMUX > 0
DPRINTF(("wskbdopen: %s mux=%p l=%p\n",
device_xname(sc->sc_base.me_dv), sc->sc_base.me_parent, l));
#endif
if (sc->sc_dying)
return (EIO);
if ((flags & (FREAD | FWRITE)) == FWRITE)
/* Not opening for read, only ioctl is available. */
return (0);
#if NWSMUX > 0
if (sc->sc_base.me_parent != NULL) {
/* Grab the keyboard out of the greedy hands of the mux. */
DPRINTF(("wskbdopen: detach\n"));
wsmux_detach_sc(&sc->sc_base);
}
#endif
if (sc->sc_base.me_evp != NULL)
return (EBUSY);
evar = &sc->sc_base.me_evar;
wsevent_init(evar, l->l_proc);
error = wskbd_do_open(sc, evar);
if (error) {
DPRINTF(("wskbdopen: %s open failed\n",
device_xname(sc->sc_base.me_dv)));
sc->sc_base.me_evp = NULL;
wsevent_fini(evar);
}
return (error);
}
