From 4d6f4cc4fe51a06c2cf6bcb12f9e130c02824a7c Mon Sep 17 00:00:00 2001
From: Greg Kaiser <gkaiser@google.com>
Date: Thu, 28 Feb 2019 06:34:25 -0800
Subject: [PATCH] libfs_avb: Pass const string by reference

Minor performance improvement for ValidatePublicKeyBlob().

Test: TreeHugger
Change-Id: I3498b529abedb8169d2488a2dc04cbd42cdb6f7d
---
 fs_mgr/libfs_avb/avb_util.cpp | 2 +-
 fs_mgr/libfs_avb/avb_util.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs_mgr/libfs_avb/avb_util.cpp b/fs_mgr/libfs_avb/avb_util.cpp
index 7d899021a..f4e4d4ee8 100644
--- a/fs_mgr/libfs_avb/avb_util.cpp
+++ b/fs_mgr/libfs_avb/avb_util.cpp
@@ -326,7 +326,7 @@ bool ValidatePublicKeyBlob(const uint8_t* key, size_t length,
     return false;
 }
 
-bool ValidatePublicKeyBlob(const std::string key_blob_to_validate,
+bool ValidatePublicKeyBlob(const std::string& key_blob_to_validate,
                            const std::vector<std::string>& allowed_key_paths) {
     std::string allowed_key_blob;
     if (key_blob_to_validate.empty()) {
diff --git a/fs_mgr/libfs_avb/avb_util.h b/fs_mgr/libfs_avb/avb_util.h
index 986a69a92..09c786a52 100644
--- a/fs_mgr/libfs_avb/avb_util.h
+++ b/fs_mgr/libfs_avb/avb_util.h
@@ -80,7 +80,7 @@ VBMetaVerifyResult VerifyVBMetaSignature(const VBMetaData& vbmeta,
 
 bool ValidatePublicKeyBlob(const uint8_t* key, size_t length, const std::string& expected_key_blob);
 
-bool ValidatePublicKeyBlob(const std::string key_blob_to_validate,
+bool ValidatePublicKeyBlob(const std::string& key_blob_to_validate,
                            const std::vector<std::string>& expected_key_paths);
 
 // Detects if whether a partition contains a rollback image.