From 6f70cc6f9292fafb6e1f499304f23afaa6feb007 Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@google.com>
Date: Tue, 13 Jul 2021 17:31:19 -0700
Subject: [PATCH] fastboot: Support casefolding in ext4 partitions.

Bug: 191929411
Test: manual test
Change-Id: I9bd0a906fa9a2605d56cc3f37247fcc2a3d5f858
---
 fastboot/fs.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fastboot/fs.cpp b/fastboot/fs.cpp
index 458a7a184..d268a502c 100644
--- a/fastboot/fs.cpp
+++ b/fastboot/fs.cpp
@@ -143,6 +143,13 @@ static int generate_ext4_image(const char* fileName, long long partSize,
         mke2fs_args.push_back("512");
     }
 
+    if (fsOptions & (1 << FS_OPT_CASEFOLD)) {
+        mke2fs_args.push_back("-O");
+        mke2fs_args.push_back("casefold");
+        mke2fs_args.push_back("-E");
+        mke2fs_args.push_back("encoding=utf8");
+    }
+
     mke2fs_args.push_back(fileName);
 
     std::string size_str = std::to_string(partSize / block_size);