1 files changed, 87 insertions, 0 deletions
diff --git a/usr.bin/window/wwpty.c b/usr.bin/window/wwpty.c
new file mode 100644
index 0000000..1d82ff9
--- /dev/null
+++ b/usr.bin/window/wwpty.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The 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.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)wwpty.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "ww.h"
+#include <fcntl.h>
+#if !defined(OLD_TTY) && !defined(TIOCPKT)
+#include <sys/ioctl.h>
+#endif
+
+wwgetpty(w)
+register struct ww *w;
+{
+	register char c, *p;
+	int tty;
+	int on = 1;
+#define PTY "/dev/XtyXX"
+#define _PT	5
+#define _PQRS	8
+#define _0_9	9
+
+	(void) strcpy(w->ww_ttyname, PTY);
+	for (c = 'p'; c <= 'u'; c++) {
+		w->ww_ttyname[_PT] = 'p';
+		w->ww_ttyname[_PQRS] = c;
+		w->ww_ttyname[_0_9] = '0';
+		if (access(w->ww_ttyname, 0) < 0)
+			break;
+		for (p = "0123456789abcdef"; *p; p++) {
+			w->ww_ttyname[_PT] = 'p';
+			w->ww_ttyname[_0_9] = *p;
+			if ((w->ww_pty = open(w->ww_ttyname, 2)) < 0)
+				continue;
+			w->ww_ttyname[_PT] = 't';
+			if ((tty = open(w->ww_ttyname, 2)) < 0) {
+				(void) close(w->ww_pty);
+				continue;
+			}
+			(void) close(tty);
+			if (ioctl(w->ww_pty, TIOCPKT, (char *)&on) < 0) {
+				(void) close(w->ww_pty);
+				continue;
+			}
+			(void) fcntl(w->ww_pty, F_SETFD, 1);
+			return 0;
+		}
+	}
+	w->ww_pty = -1;
+	wwerrno = WWE_NOPTY;
+	return -1;
+}