From 305d55e413ce193704c22adcd57608203ee224ad Mon Sep 17 00:00:00 2001
From: Pete Batard <pete@akeo.ie>
Date: Fri, 22 Mar 2024 16:11:20 +0000
Subject: [PATCH] Always start at the top of the directory in SetPathCase()

* When uefi-md5sum is being chainloaded, we can't guarantee that the file system
  will not have some directories already opened, in which case directory listing
  may continue from an existing location when invoking SetPathCase(), instead of
  starting from the beginning of that directory.
* Alleviate this by always issuing a SetPosition(0) when entering a directory.
---
 Md5SumPkg.inf | 2 +-
 src/boot.c    | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/Md5SumPkg.inf b/Md5SumPkg.inf
index 8ae8bda..97c1dfc 100644
--- a/Md5SumPkg.inf
+++ b/Md5SumPkg.inf
@@ -15,7 +15,7 @@
   BASE_NAME                  = Md5Sum
   FILE_GUID                  = 99A43E96-48DE-4B82-B726-83D6FB9A5AD9
   MODULE_TYPE                = UEFI_APPLICATION
-  VERSION_STRING             = 1.0
+  VERSION_STRING             = 1.1
   ENTRY_POINT                = efi_main
 
 [Sources]
diff --git a/src/boot.c b/src/boot.c
index d5f974f..7184554 100644
--- a/src/boot.c
+++ b/src/boot.c
@@ -137,6 +137,9 @@ STATIC EFI_STATUS SetPathCase(
 	if (EFI_ERROR(Status))
 		goto out;
 
+	// Make sure we always start at the top of the directory list
+	FileHandle->SetPosition(FileHandle, 0);
+
 	do {
 		Size = FileInfoSize;
 		ZeroMem(FileInfo, Size);