[newlib-cygwin] Cygwin: pty: Rename input/output named pipes.

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ef05e8bdae87b9a72a709a7a7054543aab45992a

commit ef05e8bdae87b9a72a709a7a7054543aab45992a
Author: Takashi Yano via Cygwin-patches <cygwin-patches@cygwin.com>
Date:   Tue Mar 23 20:50:28 2021 +0900

    Cygwin: pty: Rename input/output named pipes.
    
    - Currently, names of output pipes are "pty%d-to-master" and "pty%d-
      to-master-cyg" and names of input pipes are "pty%d-to-slave" and
      "pty%d-from-master". With this patch, these pipes are renamed to
      "pty%d-to-master-nat", "pty%d-to-master", "pty%d-from-master-nat"
      and "pty%d-from-master" respectively.

Diff:
---
 winsup/cygwin/fhandler_tty.cc | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 643a357ad..d755f7d87 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -2768,26 +2768,26 @@ fhandler_pty_master::setup ()
     termios_printf ("can't set output_handle(%p) to non-blocking mode",
 		    get_output_handle ());
 
-  char pipename[sizeof ("ptyNNNN-to-master-cyg")];
-  __small_sprintf (pipename, "pty%d-to-master", unit);
+  char pipename[sizeof ("ptyNNNN-from-master-nat")];
+  __small_sprintf (pipename, "pty%d-to-master-nat", unit);
   res = fhandler_pipe::create (&sec_none, &from_slave, &to_master,
 			       fhandler_pty_common::pipesize, pipename, 0);
   if (res)
     {
-      errstr = "output pipe";
+      errstr = "output pipe for non-cygwin apps";
       goto err;
     }
 
-  __small_sprintf (pipename, "pty%d-to-master-cyg", unit);
+  __small_sprintf (pipename, "pty%d-to-master", unit);
   res = fhandler_pipe::create (&sec_none, &get_handle (), &to_master_cyg,
 			       fhandler_pty_common::pipesize, pipename, 0);
   if (res)
     {
-      errstr = "output pipe for cygwin";
+      errstr = "output pipe";
       goto err;
     }
 
-  __small_sprintf (pipename, "pty%d-to-slave", unit);
+  __small_sprintf (pipename, "pty%d-from-master-nat", unit);
   /* FILE_FLAG_OVERLAPPED is specified here in order to prevent
      PeekNamedPipe() from blocking in transfer_input().
      Accordig to the official document, in order to access the handle