From 23ab1f8be6a1f4b5ce01e05f8ed3f6b5dae30d0b Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Tue, 24 May 2022 21:53:28 -0600
Subject: stuff

---
 pkg/btrfs/io_ref.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 pkg/btrfs/io_ref.go

(limited to 'pkg/btrfs/io_ref.go')

diff --git a/pkg/btrfs/io_ref.go b/pkg/btrfs/io_ref.go
new file mode 100644
index 0000000..aa37fee
--- /dev/null
+++ b/pkg/btrfs/io_ref.go
@@ -0,0 +1,23 @@
+package btrfs
+
+import (
+	"lukeshu.com/btrfs-tools/pkg/binstruct"
+)
+
+type Ref[T any] struct {
+	dev  *Device
+	addr int64
+	Data T
+}
+
+func (r *Ref[T]) Read() error {
+	size, err := binstruct.Size(r.Data)
+	if err != nil {
+		return err
+	}
+	buf := make([]byte, size)
+	if _, err := r.dev.ReadAt(buf, r.addr); err != nil {
+		return err
+	}
+	return binstruct.Unmarshal(buf, &r.Data)
+}
-- 
cgit v1.2.3-2-g168b