commit 0ac91e1f023db6c6f0136e08af1f94eb831ef930
author Daniel Zheng <zhengdaniel@google.com> Thu Nov 09 19:38:18 2023 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Thu Nov 09 19:38:18 2023 +0000
tree d0472e6b5abe523dd9b858d35ff1dd388283404e
parent ec63f6f10a4f549b09b53317da46db2173a3d88e
parent 04ca59d6ffb1d9f071df1d89a3fdd947f7dbd576

Merge "libsnapshot: add compatibility check" into main

fs_mgr/libsnapshot/libsnapshot_cow/cow_reader.cpp

diff --git a/fs_mgr/libsnapshot/libsnapshot_cow/cow_reader.cpp b/fs_mgr/libsnapshot/libsnapshot_cow/cow_reader.cpp
index cacd29d..8412879 100644
--- a/fs_mgr/libsnapshot/libsnapshot_cow/cow_reader.cpp
+++ b/fs_mgr/libsnapshot/libsnapshot_cow/cow_reader.cpp
@@ -685,7 +685,8 @@
     } else {
         offset = GetCowOpSourceInfoData(*op);
     }
-    if (!decompressor || op->data_length == header_.block_size) {
+    if (!decompressor ||
+        ((op->data_length == header_.block_size) && (header_.prefix.major_version == 3))) {
         CowDataStream stream(this, offset + ignore_bytes, op->data_length - ignore_bytes);
         return stream.ReadFully(buffer, buffer_size);
     }