X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/7c38ad4ddde0e33cf3dee5f7cb6b869cb92adc43..419d8eabcd73b76f91ed59bb578fee0cb941f584:/usr/src/usr.bin/window/wwrint.c

diff --git a/usr/src/usr.bin/window/wwrint.c b/usr/src/usr.bin/window/wwrint.c
index d4c305fcc8..959a36a5a8 100644
--- a/usr/src/usr.bin/window/wwrint.c
+++ b/usr/src/usr.bin/window/wwrint.c
@@ -1,22 +1,31 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * %sccs.include.redist.c%
+ */
+
 #ifndef lint
-static	char *sccsid = "@(#)wwrint.c	3.2 84/04/16";
-#endif
+static char sccsid[] = "@(#)wwrint.c	3.11 (Berkeley) %G%";
+#endif /* not lint */
 
 #include "ww.h"
 #include <fcntl.h>
-#include <sys/signal.h>
 
 /*
  * Tty input interrupt handler.
  * (1) Read input into buffer (wwib*).
- * (2) If the flag wwsetjmp is true, do longjmp(wwjmpbuf) for asyncronous
- *     actions, and to avoid race conditions, clear wwsetjmp.
+ * (2) Set the interrupt flag if anything is read.
  * Currently, the last is used to get out of the blocking
  * select() in wwiomux().
  * To avoid race conditions, we only modify wwibq in here, except
  * when the buffer is empty; and everywhere else, we only change wwibp.
  * It should be completely safe.
  */
+void
 wwrint()
 {
 	register n;
@@ -30,13 +39,9 @@ wwrint()
 	if (n > 0) {
 		wwibq += n;
 		wwnreadc += n;
+		wwsetintr();
 	} else if (n == 0)
 		wwnreadz++;
 	else
 		wwnreade++;
-	if (wwinterrupt() && wwsetjmp) {
-		wwsetjmp = 0;
-		(void) sigsetmask(sigblock(0) & ~sigmask(SIGIO));
-		longjmp(wwjmpbuf, 1);
-	}
 }