Let pty slave detect closure of last master handle

	* fhandler_tty.cc (fhandler_pty_master::close): Add code to make slave
	detect closure of master. Fix typo in error message.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

1 files changed, 9 insertions, 3 deletions

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index c7c90e28d..87bd6a0aa 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -1317,17 +1317,23 @@ fhandler_pty_master::close ()
 	}
     }
 
+  fhandler_pty_common::close ();
+
+  /* Check if the last master handle has been closed.  If so, set
+     input_available_event to wake up potentially waiting slaves. */
+  if (!PeekNamedPipe (from_master, NULL, 0, NULL, NULL, NULL)
+      && GetLastError () == ERROR_BROKEN_PIPE) 
+    SetEvent (input_available_event);
+
   if (!ForceCloseHandle (from_master))
     termios_printf ("error closing from_master %p, %E", from_master);
   if (!ForceCloseHandle (to_master))
-    termios_printf ("error closing from_master %p, %E", to_master);
+    termios_printf ("error closing to_master %p, %E", to_master);
   from_master = to_master = NULL;
   ForceCloseHandle (echo_r);
   ForceCloseHandle (echo_w);
   echo_r = echo_w = NULL;
 
-  fhandler_pty_common::close ();
-
   if (have_execed || get_ttyp ()->master_pid != myself->pid)
     termios_printf ("not clearing: %d, master_pid %d", have_execed, get_ttyp ()->master_pid);
   if (!ForceCloseHandle (input_available_event))