better error messages

SCCS-vsn: sys/vax/uba/tm.c 4.38

diff --git a/usr/src/sys/vax/uba/tm.c b/usr/src/sys/vax/uba/tm.c
index acf3e96..c1a344a 100644 (file)
--- a/usr/src/sys/vax/uba/tm.c
+++ b/usr/src/sys/vax/uba/tm.c
@@ -1,4 +1,4 @@
-/*     tm.c    4.37    81/04/28        */
+/*     tm.c    4.38    81/05/09        */

 
 #include "te.h"
 #include "ts.h"
 
 #include "te.h"
 #include "ts.h"


@@ -222,13 +222,19 @@ get:
                goto get;
        }
        sc->sc_dens = olddens;
                goto get;
        }
        sc->sc_dens = olddens;

-       if ((sc->sc_erreg&(TMER_SELR|TMER_TUR)) != (TMER_SELR|TMER_TUR) ||
-           (flag&FWRITE) && (sc->sc_erreg&TMER_WRL) ||
-           (sc->sc_erreg&TMER_BOT) == 0 && (flag&FWRITE) &&
-               dens != sc->sc_dens) {
-               /*
-                * Not online or density switch in mid-tape or write locked.
-                */
+       if ((sc->sc_erreg&(TMER_SELR|TMER_TUR)) != (TMER_SELR|TMER_TUR)) {
+               uprintf("te%d: not online\n", teunit);
+               u.u_error = EIO;
+               return;
+       }
+       if ((flag&FWRITE) && (sc->sc_erreg&TMER_WRL)) {
+               uprintf("te%d: no write ring\n", teunit);
+               u.u_error = EIO;
+               return;
+       }
+       if ((sc->sc_erreg&TMER_BOT) == 0 && (flag&FWRITE) &&
+           dens != sc->sc_dens) {
+               uprintf("te%d: can't change density in mid-tape\n", teunit);

                u.u_error = EIO;
                return;
        }
                u.u_error = EIO;
                return;
        }