From d4c5af23febb4d5c2fa5d2f2ce8bc9837068dfff Mon Sep 17 00:00:00 2001
From: nikstur <nikstur@outlook.com>
Date: Fri, 30 Dec 2022 03:38:57 +0100
Subject: [PATCH] lanzatool: improve error msg for file_size

---
 rust/lanzatool/src/pe.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/rust/lanzatool/src/pe.rs b/rust/lanzatool/src/pe.rs
index d2d0188..2101b43 100644
--- a/rust/lanzatool/src/pe.rs
+++ b/rust/lanzatool/src/pe.rs
@@ -205,5 +205,13 @@ fn image_base(pe: &PE) -> u64 {
 }
 
 fn file_size(path: impl AsRef<Path>) -> Result<u64> {
-    Ok(fs::File::open(path)?.metadata()?.size())
+    Ok(fs::File::open(&path)
+        .with_context(|| {
+            format!(
+                "Failed to read file to calculate its size: {:?}",
+                path.as_ref()
+            )
+        })?
+        .metadata()?
+        .size())
 }