libbinder: support TF_CLEAR_BUF
This flag instructs the kernel to clear transactions from send/reply
buffers for certain transactions which may contain sensitive data, as a
security precaution.
Bug: 171501998
Test: binderLibTest (only checks there is no error)
Change-Id: I69d732e5cc2b15472dc52d47c66716bc1b3be6ae
diff --git a/libs/binder/rust/src/parcel.rs b/libs/binder/rust/src/parcel.rs
index 2c1e5a4..6c34824 100644
--- a/libs/binder/rust/src/parcel.rs
+++ b/libs/binder/rust/src/parcel.rs
@@ -100,6 +100,14 @@
// Data serialization methods
impl Parcel {
+ /// Data written to parcelable is zero'd before being deleted or reallocated.
+ pub fn mark_sensitive(&mut self) {
+ unsafe {
+ // Safety: guaranteed to have a parcel object, and this method never fails
+ sys::AParcel_markSensitive(self.as_native())
+ }
+ }
+
/// Write a type that implements [`Serialize`] to the `Parcel`.
pub fn write<S: Serialize + ?Sized>(&mut self, parcelable: &S) -> Result<()> {
parcelable.serialize(self)