commit 3db15fb01d2deb05a31f6193a5b6a1dec24551f7
author Treehugger Robot <treehugger-gerrit@google.com> Fri Oct 29 05:46:03 2021 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Fri Oct 29 05:46:03 2021 +0000
tree e49926990262f0f812d6396c2f76b7a0686e412d
parent 5ce2798afe614177a6355a4b50bb7783c66326bd
parent 1edd5b9a669f9de3e127f9986e812b300523245d

Merge "Erase data before initializeWritablePartition"

virtualizationservice/src/aidl.rs

diff --git a/virtualizationservice/src/aidl.rs b/virtualizationservice/src/aidl.rs
index 74a9365..5d64684 100644
--- a/virtualizationservice/src/aidl.rs
+++ b/virtualizationservice/src/aidl.rs
@@ -256,7 +256,13 @@
             )
         })?;
         let image = clone_file(image_fd)?;
-
+        // initialize the file. Any data in the file will be erased.
+        image.set_len(0).map_err(|e| {
+            new_binder_exception(
+                ExceptionCode::SERVICE_SPECIFIC,
+                format!("Failed to reset a file: {}", e),
+            )
+        })?;
         let mut part = QcowFile::new(image, size).map_err(|e| {
             new_binder_exception(
                 ExceptionCode::SERVICE_SPECIFIC,