* fhandler.h (class dev_console): Add `metabit' indicating the

current meta key mode.
	* fhandler_console.cc (fhandler_console::read): Set the top bit of
	the character if metabit is true.
	* fhandler_console.cc (fhandler_console::ioctl): Implement
	KDGKBMETA and KDSKBMETA commands.
	* fhandler_tty.cc (process_ioctl): Support KDSKBMETA.
	(fhandler_tty_slave::ioctl): Send KDGKBMETA and KDSKBMETA to the
	master.
	* include/cygwin/kd.h: New file for the meta key mode.
	* include/sys/kd.h: New file.

winsup/cygwin/ChangeLog

@@ -1,3 +1,17 @@
+2006-07-03  Kazuhiro Fujieda  <fujieda@jaist.ac.jp>
+
+	* fhandler.h (class dev_console): Add `metabit' indicating the
+	current meta key mode.
+	* fhandler_console.cc (fhandler_console::read): Set the top bit of
+	the character if metabit is true.
+	* fhandler_console.cc (fhandler_console::ioctl): Implement
+	KDGKBMETA and KDSKBMETA commands.
+	* fhandler_tty.cc (process_ioctl): Support KDSKBMETA.
+	(fhandler_tty_slave::ioctl): Send KDGKBMETA and KDSKBMETA to the
+	master.
+	* include/cygwin/kd.h: New file for the meta key mode.
+	* include/sys/kd.h: New file.
+
 2006-07-03  Eric Blake  <ebb9@byu.net>
 
 	* include/stdint.h (UINT8_C, UINT16_C): Unsigned types smaller

winsup/cygwin/fhandler.h

@@ -821,6 +821,7 @@ class dev_console
   unsigned rarg;
   bool saw_question_mark;
   bool alternate_charset_active;
+  bool metabit;
 
   char my_title_buf [TITLESIZE + 1];
 

winsup/cygwin/fhandler_console.cc

@@ -20,6 +20,7 @@ details. */
 #include <winnls.h>
 #include <ctype.h>
 #include <sys/cygwin.h>
+#include <cygwin/kd.h>
 #include "cygerrno.h"
 #include "security.h"
 #include "path.h"
@@ -397,6 +398,11 @@ fhandler_console::read (void *pv, size_t& buflen)
 		meta = (control_key_state & dev_state->meta_mask) != 0;
 	      if (!meta)
 		toadd = tmp + 1;
+	      else if (dev_state->metabit)
+		{
+		  tmp[1] |= 0x80; 
+		  toadd = tmp + 1;
+		}
 	      else
 		{
 		  tmp[0] = '\033';
@@ -745,6 +751,20 @@ fhandler_console::ioctl (unsigned int cmd, void *buf)
       case TIOCSWINSZ:
 	bg_check (SIGTTOU);
 	return 0;
+      case KDGKBMETA:
+	*(int *) buf = (dev_state->metabit) ? K_METABIT : K_ESCPREFIX;
+	return 0;
+      case KDSKBMETA:
+	if ((int) buf == K_METABIT)
+	  dev_state->metabit = TRUE;
+	else if ((int) buf == K_ESCPREFIX)
+	  dev_state->metabit = FALSE;
+	else
+	  {
+	    set_errno (EINVAL);
+	    return -1;
+	  }
+	return 0;
       case TIOCLINUX:
 	if (* (int *) buf == 6)
 	  {

winsup/cygwin/fhandler_tty.cc

@@ -17,6 +17,7 @@ details. */
 #include <stdlib.h>
 #include <ctype.h>
 #include <limits.h>
+#include <cygwin/kd.h>
 #include "cygerrno.h"
 #include "security.h"
 #include "path.h"
@@ -435,9 +436,12 @@ process_ioctl (void *)
     {
       WaitForSingleObject (tty_master->ioctl_request_event, INFINITE);
       termios_printf ("ioctl() request");
-      tty_master->get_ttyp ()->ioctl_retval =
+      tty *ttyp = tty_master->get_ttyp ();
-      tty_master->console->ioctl (tty_master->get_ttyp ()->cmd,
+      ttyp->ioctl_retval =
-			     (void *) &tty_master->get_ttyp ()->arg);
+      tty_master->console->ioctl (ttyp->cmd,
+				  (ttyp->cmd == KDSKBMETA)
+				  ? (void *) ttyp->arg.value
+				  : (void *) &ttyp->arg);
       SetEvent (tty_master->ioctl_done_event);
     }
 }
@@ -1001,6 +1005,8 @@ fhandler_tty_slave::ioctl (unsigned int cmd, void *arg)
     case TIOCGWINSZ:
     case TIOCSWINSZ:
     case TIOCLINUX:
+    case KDGKBMETA:
+    case KDSKBMETA:
       break;
     case FIONBIO:
       set_nonblocking (*(int *) arg);
@@ -1057,6 +1063,28 @@ fhandler_tty_slave::ioctl (unsigned int cmd, void *arg)
 	  *(unsigned char *) arg = get_ttyp ()->arg.value & 0xFF;
 	}
       break;
+    case KDGKBMETA:
+      if (ioctl_request_event)
+	{
+	  SetEvent (ioctl_request_event);
+	  if (ioctl_done_event)
+	    WaitForSingleObject (ioctl_done_event, INFINITE);
+	  *(int *) arg = get_ttyp ()->arg.value;
+	}
+      else
+	get_ttyp ()->ioctl_retval = -EINVAL;
+      break;
+    case KDSKBMETA:
+      if (ioctl_request_event)
+	{
+	  get_ttyp ()->arg.value = (int) arg;
+	  SetEvent (ioctl_request_event);
+	  if (ioctl_done_event)
+	    WaitForSingleObject (ioctl_done_event, INFINITE);
+	}
+      else
+	get_ttyp ()->ioctl_retval = -EINVAL;
+      break;
     }
 
   release_output_mutex ();

winsup/cygwin/include/cygwin/kd.h

@@ -0,0 +1,20 @@
+/* cygwin/kd.h
+
+   Copyright 2006 Red Hat Inc.
+   Written by Kazuhiro Fujieda <fujieda@jaist.ac.jp>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _CYGWIN_KD_H_
+#define _CYGWIN_KD_H_
+
+#define KDGKBMETA 0x4b62
+#define KDSKBMETA 0x4b63
+#define K_METABIT 0x03
+#define K_ESCPREFIX 0x04
+
+#endif /* _CYGWIN_KD_H_ */

winsup/cygwin/include/sys/kd.h

@@ -0,0 +1,20 @@
+/* sys/kd.h
+
+   Copyright 2006 Red Hat, Inc.
+
+   Written by Kazuhiro Fujieda <fujieda@jaist.ac.jp>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+/* sys/kd.h header file for Cygwin.  */
+
+#ifndef _SYS_KD_H
+#define _SYS_KD_H
+
+#include <cygwin/kd.h>
+
+#endif /* _SYS_KD_H */