From ad9ac6d07ce1819260c2b7f090fd4fe742c80d9f Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sun, 10 Jul 2022 23:49:07 -0600
Subject: Fuzz btrfsitem, and by consequence improve binstruct errors

---
 lib/binstruct/binutil/binutil.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 lib/binstruct/binutil/binutil.go

(limited to 'lib/binstruct/binutil')

diff --git a/lib/binstruct/binutil/binutil.go b/lib/binstruct/binutil/binutil.go
new file mode 100644
index 0000000..684237f
--- /dev/null
+++ b/lib/binstruct/binutil/binutil.go
@@ -0,0 +1,16 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package binutil
+
+import (
+	"fmt"
+)
+
+func NeedNBytes(dat []byte, n int) error {
+	if len(dat) < n {
+		return fmt.Errorf("need at least %v bytes, only have %v", n, len(dat))
+	}
+	return nil
+}
-- 
cgit v1.2.3-2-g168b