From 6c7a5f336e34f2f6a9290a30144ac22a19ca0adb Mon Sep 17 00:00:00 2001
From: Avi Deitcher <avi@deitcher.net>
Date: Thu, 19 Mar 2026 10:31:21 +0200
Subject: [PATCH] squashfs: properly count written bytes

Signed-off-by: Avi Deitcher <avi@deitcher.net>
---
 filesystem/squashfs/finalize.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/filesystem/squashfs/finalize.go b/filesystem/squashfs/finalize.go
index 490522be..d5b2dec2 100644
--- a/filesystem/squashfs/finalize.go
+++ b/filesystem/squashfs/finalize.go
@@ -388,6 +388,7 @@ func copyFileData(from backend.File, to backend.WritableFile, fromOffset, toOffs
 			if len(out) < len(buf) {
 				isCompressed = true
 				buf = out
+				n = len(out)
 			}
 		}
 		blocks = append(blocks, &blockData{size: uint32(len(buf)), compressed: isCompressed})