4185 New hash algorithm support

@@ -23,10 +23,11 @@
  * Use is subject to license terms.
  */
 
 /*
  * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright 2013 Saso Kiselkov. All rights reserved.
  */
 
 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
 /*        All Rights Reserved   */
 

@@ -130,10 +131,18 @@
 #define ASSERT3U(x, y, z)       ((void)0)
 #define ASSERT3P(x, y, z)       ((void)0)
 #define ASSERT0(x)              ((void)0)
 #endif
 
+/*
+ * Compile-time assertion. The condition 'x' must be constant.
+ */
+#define CTASSERT(x)             _CTASSERT(x, __LINE__)
+#define _CTASSERT(x, y)         __CTASSERT(x, y)
+#define __CTASSERT(x, y) \
+        typedef char __compile_time_assertion__ ## y [(x) ? 1 : -1]
+
 #ifdef  _KERNEL
 
 extern void abort_sequence_enter(char *);
 extern void debug_enter(char *);