* devices.in (dev_storage): Map /dev/clipboard to \Device\Null.

* devices.cc: Regenerate.
	* fhandler.h (fhandler_dev_clipboard::open): Drop declaration.
	* fhandler_clipboard.cc (fhandler_dev_clipboard::dup): Drop call to
	open.  Set private members to 0 and call fhandler_base::dup.
	(fhandler_dev_clipboard::open): Remove so that default
	fhandler_base::open is used to open \Device\Null.
	(set_clipboard): Drop gratuitios call to RegisterClipboardFormatW.
	(fhandler_dev_clipboard::close): Call fhandler_base::close from here.

winsup/cygwin/ChangeLog

@@ -1,3 +1,15 @@
+2013-10-25  Corinna Vinschen  <corinna@vinschen.de>
+
+	* devices.in (dev_storage): Map /dev/clipboard to \Device\Null.
+	* devices.cc: Regenerate.
+	* fhandler.h (fhandler_dev_clipboard::open): Drop declaration.
+	* fhandler_clipboard.cc (fhandler_dev_clipboard::dup): Drop call to
+	open.  Set private members to 0 and call fhandler_base::dup.
+	(fhandler_dev_clipboard::open): Remove so that default
+	fhandler_base::open is used to open \Device\Null.
+	(set_clipboard): Drop gratuitios call to RegisterClipboardFormatW.
+	(fhandler_dev_clipboard::close): Call fhandler_base::close from here.
+
 2013-10-25  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler_disk_file.cc (fhandler_base::fstat_fs): Fix comment.

winsup/cygwin/devices.cc

@@ -142,7 +142,7 @@ const device dev_error_storage =
 const _RDATA device dev_storage[] =
 {
   {"/dev", BRACK(FH_DEV), "/dev", exists, S_IFDIR, false},
-  {"/dev/clipboard", BRACK(FH_CLIPBOARD), "/dev/clipboard", exists, S_IFCHR, true},
+  {"/dev/clipboard", BRACK(FH_CLIPBOARD), "\\Device\\Null", exists_ntdev, S_IFCHR, true},
   {"/dev/com1", BRACK(FHDEV(DEV_SERIAL_MAJOR, 0)), "\\??\\COM1", exists_ntdev_silent, S_IFCHR, true},
   {"/dev/com2", BRACK(FHDEV(DEV_SERIAL_MAJOR, 1)), "\\??\\COM2", exists_ntdev_silent, S_IFCHR, true},
   {"/dev/com3", BRACK(FHDEV(DEV_SERIAL_MAJOR, 2)), "\\??\\COM3", exists_ntdev_silent, S_IFCHR, true},

winsup/cygwin/devices.in

@@ -156,7 +156,7 @@ const device dev_error_storage =
 "/dev/full", BRACK(FH_FULL), "\\Device\\Null", exists_ntdev, S_IFCHR
 "/dev/random", BRACK(FH_RANDOM), "\\Device\\Null", exists_ntdev, S_IFCHR
 "/dev/urandom", BRACK(FH_URANDOM), "\\Device\\Null", exists_ntdev, S_IFCHR, =urandom_dev
-"/dev/clipboard", BRACK(FH_CLIPBOARD), "/dev/clipboard", exists, S_IFCHR
+"/dev/clipboard", BRACK(FH_CLIPBOARD), "\\Device\\Null", exists_ntdev, S_IFCHR
 "/dev/com%(1-16)d", BRACK(FHDEV(DEV_SERIAL_MAJOR, {$1 - 1})), "\\??\\COM{$1}", exists_ntdev_silent, S_IFCHR
 "/dev/ttyS%(0-63)d", BRACK(FHDEV(DEV_SERIAL_MAJOR, {$1})), "\\??\\COM{$1 + 1}", exists_ntdev, S_IFCHR
 ":pipe", BRACK(FH_PIPE), "/dev/pipe", exists_internal, S_IFCHR

winsup/cygwin/fhandler.h

@@ -1691,7 +1691,6 @@ class fhandler_dev_clipboard: public fhandler_base
  public:
   fhandler_dev_clipboard ();
   int is_windows () { return 1; }
-  int open (int flags, mode_t mode = 0);
   int __reg2 fstat (struct stat *buf);
   ssize_t __stdcall write (const void *ptr, size_t len);
   void __reg3 read (void *ptr, size_t& len);

winsup/cygwin/fhandler_clipboard.cc

@@ -55,25 +55,12 @@ fhandler_dev_clipboard::fhandler_dev_clipboard ()
  */
 
 int
-fhandler_dev_clipboard::dup (fhandler_base * child, int)
+fhandler_dev_clipboard::dup (fhandler_base * child, int flags)
 {
   fhandler_dev_clipboard *fhc = (fhandler_dev_clipboard *) child;
-
+  fhc->pos = fhc->msize = 0;
-  if (!fhc->open (get_flags (), 0))
+  fhc->membuffer = NULL;
-    system_printf ("error opening clipboard, %E");
+  return fhandler_base::dup (child, flags);
-  return 0;
-}
-
-int
-fhandler_dev_clipboard::open (int flags, mode_t)
-{
-  set_flags (flags | O_TEXT);
-  pos = 0;
-  if (!cygnativeformat)
-    cygnativeformat = RegisterClipboardFormatW (CYGWIN_NATIVE);
-  nohandle (true);
-  set_open_status ();
-  return 1;
 }
 
 static int
@@ -100,8 +87,6 @@ set_clipboard (const void *buf, size_t len)
 
       GlobalUnlock (hmem);
       EmptyClipboard ();
-      if (!cygnativeformat)
-	cygnativeformat = RegisterClipboardFormatW (CYGWIN_NATIVE);
       HANDLE ret = SetClipboardData (cygnativeformat, hmem);
       CloseClipboard ();
       /* According to MSDN, hmem must not be free'd after transferring the
@@ -346,15 +331,14 @@ fhandler_dev_clipboard::close ()
 {
   if (!have_execed)
     {
-      pos = 0;
+      pos = msize = 0;
       if (membuffer)
 	{
 	  free (membuffer);
 	  membuffer = NULL;
 	}
-      msize = 0;
     }
-  return 0;
+  return fhandler_base::close ();
 }
 
 void

winsup/cygwin/release/1.7.26

@@ -7,9 +7,9 @@ What changed:
 
 - Slightly improve randomness of /dev/random emulation.
 
-- Allow to use advisory locking on any device which is backed by an OS
+- Allow to use advisory locking on any device which is backed by an OS handle.
-  handle.  Right now this excludes /dev/clipboard, /dev/dsp, as well as
+  Right now this excludes /dev/dsp as well as almost all virtual files under
-  almost all virtual files under /proc.
+  /proc.
 
 
 Bug fixes: