zdtm: add a new test to check inherited tty-s

v2: set a control terminal
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/inhfd/tty.py

+import os, pty
+import termios, fcntl
+
+def child_prep(fd):
+	fcntl.ioctl(fd.fileno(), termios.TIOCSCTTY, 1)
+
+def create_fds():
+	(fd1, fd2) = pty.openpty()
+	return (os.fdopen(fd2, "w"), os.fdopen(fd1, "r"))
+
+def filename(pipef):
+	st = os.fstat(pipef.fileno())
+	return 'tty[%x:%x]' % (st.st_rdev, st.st_dev)
+
+def dump_opts(sockf):
+	st = os.fstat(sockf.fileno())
+	return ["--external", 'tty[%x:%x]' % (st.st_rdev, st.st_dev)]

test/inhfd/tty.py.desc

+{ 'flavor': 'h' }

test/zdtm.py

@@ -454,6 +454,9 @@ class inhfd_test:
 		self.__peer_pid = os.fork()
 		if self.__peer_pid == 0:
 			os.setsid()
+
+			getattr(self.__fdtyp, "child_prep", lambda fd : None)(peer_file)
+
 			os.close(0)
 			os.close(1)
 			os.close(2)