From: Sam Leffler <sam@ucbvax.Berkeley.EDU>
Date: Sun, 26 Jun 1983 13:34:26 +0000 (-0800)
Subject: fix for new signals
X-Git-Tag: BSD-4_2-Snapshot-Development~1329
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/7e8a26857e06a0fa28e377df5156038275410131

fix for new signals

SCCS-vsn: lib/libcurses/tstp.c 1.3
---

diff --git a/usr/src/lib/libcurses/tstp.c b/usr/src/lib/libcurses/tstp.c
index ce066ee685..b71a61f600 100644
--- a/usr/src/lib/libcurses/tstp.c
+++ b/usr/src/lib/libcurses/tstp.c
@@ -12,6 +12,7 @@ tstp() {
 # ifdef SIGTSTP
 
 	SGTTY	tty;
+	int	omask;
 # ifdef DEBUG
 	if (outf)
 		fflush(outf);
@@ -20,7 +21,12 @@ tstp() {
 	mvcur(0, COLS - 1, LINES - 1, 0);
 	endwin();
 	fflush(stdout);
+	/* reset signal handler so kill below stops us */
+	signal(SIGTSTP, SIG_DFL);
+#define	mask(s)	(1 << ((s)-1))
+	omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP));
 	kill(0, SIGTSTP);
+	sigblock(mask(SIGTSTP));
 	signal(SIGTSTP, tstp);
 	_tty = tty;
 	stty(_tty_ch, &_tty);