From 892637683ca20dcb133db6375641d020c722ec79 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 29 Jul 2018 13:48:14 +0530
Subject: [PATCH] Fix controlling terminal not being set on BSD

Fixes #764
---
 kitty/child.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kitty/child.c b/kitty/child.c
index d5c6876fb..bb2f63a07 100644
--- a/kitty/child.c
+++ b/kitty/child.c
@@ -79,6 +79,10 @@ spawn(PyObject *self UNUSED, PyObject *args) {
             // Establish the controlling terminal (see man 7 credentials)
             int tfd = open(name, O_RDWR);
             if (tfd == -1) exit_on_err("Failed to open controlling terminal");
+#ifdef TIOCSTTY
+            // On BSD open() does not establish the controlling terminal
+            if (ioctl(tfd, TIOCSCTTY, 0) == -1) exit_on_err("Failed to set controlling terminal with TIOCSCTTY");
+#endif
             close(tfd);
 
             environ = env;