TIOCSWINSZ fix

["Nicholas S Castellano" <entropy@terminator.rs.itd.umich.edu>]

tty.c: ++entropy@terminator.rs.itd.umich.edu
	When the window size for a tty, has changed, send SIGWINCH to the
	foreground process group of the tty.

--- 1.10.1.4	1994/02/27 04:04:56
+++ tty.c	1994/03/19 12:47:20
@@ -528,7 +528,15 @@
 		return 0;
 	case TIOCSWINSZ:
 		sz = (struct winsize *)arg;
+		if (sz->ws_row != tty->wsiz.ws_row
+		    || sz->ws_col != tty->wsiz.ws_col
+		    || sz->ws_xpixel != tty->wsiz.ws_xpixel
+		    || sz->ws_ypixel != tty->wsiz.ws_ypixel)
+		  i = 1;
+		else
+		  i = 0;
 		tty->wsiz = *sz;
+		if (i) killgroup(tty->pgrp, SIGWINCH);
 		return 0;
 	case TIOCGPGRP:
 		*((long *)arg) = tty->pgrp;

--
entropy -- it's not just a good idea, it's the second law.
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