#if __DARWIN_ACL_CHANGE_OWNER != KAUTH_VNODE_CHANGE_OWNER
# error __DARWIN_ACL_CHANGE_OWNER != KAUTH_VNODE_CHANGE_OWNER
#endif
+#if __DARWIN_ACL_SYNCHRONIZE != KAUTH_VNODE_SYNCHRONIZE
+# error __DARWIN_ACL_SYNCHRONIZE != KAUTH_VNODE_SYNCHRONIZE
+#endif
int
acl_add_perm(acl_permset_t permset, acl_perm_t perm)