From Lite2; mark terminal devices as exclusively opened before flushing

diff --git a/sys/net/if_sl.c b/sys/net/if_sl.c
index edd7579..c7f9867 100644 (file)
--- a/sys/net/if_sl.c
+++ b/sys/net/if_sl.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_sl.c,v 1.2 1996/03/03 21:07:10 niklas Exp $        */
+/*     $OpenBSD: if_sl.c,v 1.3 1996/03/14 08:41:45 tholo Exp $ */
 /*     $NetBSD: if_sl.c,v 1.38 1996/02/13 22:00:23 christos Exp $      */
 
 /*
@@ -255,9 +255,7 @@ slopen(dev, tp)
        register struct sl_softc *sc;
        register int nsl;
        int error;
-#ifdef NetBSD
        int s;
-#endif
 
        if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
                return (error);
@@ -272,6 +270,9 @@ slopen(dev, tp)
                        tp->t_sc = (caddr_t)sc;
                        sc->sc_ttyp = tp;
                        sc->sc_if.if_baudrate = tp->t_ospeed;
+                       s = spltty();
+                       tp->t_state |= TS_ISOPEN | TS_XCLUDE;
+                       splx(s);
                        ttyflush(tp, FREAD | FWRITE);
 #ifdef NetBSD
                        /*