--- uts/common/fs/zfs/dsl_dir.c	2006/08/03 03:39:14
+++ uts/common/fs/zfs/dsl_dir.c	2006/08/15 20:30:56
@@ -223,7 +223,7 @@
 {
 	char *p;
 	if (path == NULL)
-		return (NULL);
+		return (EINVAL);
 	/* This would be a good place to reserve some namespace... */
 	p = strpbrk(path, "/@");
 	if (p && (p[1] == '/' || p[1] == '@')) {