fixed syserror to handle quotas right on v7

SCCS-vsn: usr.bin/ex/ex_subr.c 6.2

diff --git a/usr/src/usr.bin/ex/ex_subr.c b/usr/src/usr.bin/ex/ex_subr.c
index 3cb8c92..d89b216 100644 (file)
--- a/usr/src/usr.bin/ex/ex_subr.c
+++ b/usr/src/usr.bin/ex/ex_subr.c
@@ -1,5 +1,5 @@
 /* Copyright (c) 1980 Regents of the University of California */
 /* Copyright (c) 1980 Regents of the University of California */

-static char *sccsid = "@(#)ex_subr.c   6.1 %G%";
+static char *sccsid = "@(#)ex_subr.c   6.2 %G%";

 #include "ex.h"
 #include "ex_re.h"
 #include "ex_tty.h"
 #include "ex.h"
 #include "ex_re.h"
 #include "ex_tty.h"


@@ -664,13 +664,12 @@ short     std_errlist[] = {
        error("Illegal seek"),
        error("Read-only file system"),
        error("Too many links"),
        error("Illegal seek"),
        error("Read-only file system"),
        error("Too many links"),

-       error("Broken pipe")
-#ifndef QUOTA
-       , error("Math argument")
-       , error("Result too large")
-#else
-       , error("Quota exceeded")
+       error("Broken pipe"),
+#ifndef V6
+       error("Math argument"),
+       error("Result too large"),

 #endif
 #endif

+       error("Quota exceeded")         /* Berkeley quota systems only */

 };
 
 #undef error
 };
 
 #undef error


@@ -807,3 +806,24 @@ markit(addr)
        if (addr != dot && addr >= one && addr <= dol)
                markDOT();
 }
        if (addr != dot && addr >= one && addr <= dol)
                markDOT();
 }

+
+/*
+ * The following code is defensive programming against a bug in the
+ * pdp-11 overlay implementation.  Sometimes it goes nuts and asks
+ * for an overlay with some garbage number, which generates an emt
+ * trap.  This is a less than elegant solution, but it is somewhat
+ * better than core dumping and losing your work, leaving your tty
+ * in a weird state, etc.
+ */
+int _ovno;
+onemt()
+{
+       int oovno;
+
+       signal(SIGEMT, onemt);
+       oovno = _ovno;
+       /* 2 and 3 are valid on 11/40 type vi, so */
+       if (_ovno < 0 || _ovno > 3)
+               _ovno = 0;
+       error("emt trap, _ovno is %d @ - try again");
+}