Index: head/sys/sys/exec.h
===================================================================
--- head/sys/sys/exec.h
+++ head/sys/sys/exec.h
@@ -58,13 +58,6 @@
 	unsigned int ps_nenvstr; /* the number of environment strings */
 };
 
-/*
- * Address of ps_strings structure (in user space).
- * Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
- */
-#define	PS_STRINGS	(USRSTACK - sizeof(struct ps_strings))
-#define SPARE_USRSPACE	4096
-
 struct image_params;
 
 struct execsw {
@@ -77,6 +70,13 @@
 #ifdef _KERNEL
 #include <sys/cdefs.h>
 
+/*
+ * Address of ps_strings structure (in user space).
+ * Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
+ */
+#define	PS_STRINGS	(USRSTACK - sizeof(struct ps_strings))
+#define	SPARE_USRSPACE	4096
+
 int exec_map_first_page(struct image_params *);        
 void exec_unmap_first_page(struct image_params *);