From 3179489ad6498e3d8b2b7948d93cee4efa01049f Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Wed, 11 May 2022 12:34:18 -0600
Subject: move to pkg/btrfs, get CRC working

---
 pkg/btrfs/crc32c.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 pkg/btrfs/crc32c.go

(limited to 'pkg/btrfs/crc32c.go')

diff --git a/pkg/btrfs/crc32c.go b/pkg/btrfs/crc32c.go
new file mode 100644
index 0000000..4ea4169
--- /dev/null
+++ b/pkg/btrfs/crc32c.go
@@ -0,0 +1,16 @@
+package btrfs
+
+import (
+	"encoding/binary"
+	"hash/crc32"
+)
+
+type CSum [0x20]byte
+
+func CRC32c(data []byte) CSum {
+	crc := crc32.Update(0, crc32.MakeTable(crc32.Castagnoli), data)
+
+	var ret CSum
+	binary.LittleEndian.PutUint32(ret[:], crc)
+	return ret
+}
-- 
cgit v1.2.3-54-g00ecf