D29431.diff
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	diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c
	--- a/sys/kern/vfs_lookup.c
	+++ b/sys/kern/vfs_lookup.c
	@@ -44,6 +44,7 @@

	#include <sys/param.h>
	#include <sys/systm.h>
	+#include <sys/dirent.h>
	#include <sys/kernel.h>
	#include <sys/capsicum.h>
	#include <sys/fcntl.h>
	@@ -747,6 +748,14 @@
	return (0);
	}

	+/*
	+ * Various filesystems expect to be able to copy a name component with length
	+ * bounded by NAME_MAX into a directory entry buffer of size MAXNAMLEN. Make
	+ * sure that these are the same size.
	+ */
	+_Static_assert(MAXNAMLEN == NAME_MAX,
	+ "MAXNAMLEN and NAME_MAX have different values");
	+
	/*
	* Search a pathname.
	* This is a very central and rather complicated routine.