R6.6 is the Xorg base-line

include/validate.h

@@ -0,0 +1,41 @@
+/* $Xorg: validate.h,v 1.4 2001/02/09 02:05:16 xorgcvs Exp $ */
+
+/*
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+*/
+
+#ifndef VALIDATE_H
+#define VALIDATE_H
+
+#include "miscstruct.h"
+#include "regionstr.h"
+
+typedef enum { VTOther, VTStack, VTMove, VTUnmap, VTMap } VTKind;
+
+/* union _Validate is now device dependent; see mivalidate.h for an example */
+typedef union _Validate *ValidatePtr;
+
+#define UnmapValData ((ValidatePtr)1)
+
+#endif /* VALIDATE_H */