libbinder: Add binder::Status type
This object implements equivalent functionality to the Java logic which
serializes and re-throws exceptions from services.
Bug: 25615695
Test: Integration test for generated AIDL code reveals this to work
correctly.
Change-Id: Ic80c9def0dd232582ea9c49717ec50894af6bfc2
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index c808948..c1e6f0e 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -23,6 +23,7 @@
#include <binder/Binder.h>
#include <binder/BpBinder.h>
#include <binder/ProcessState.h>
+#include <binder/Status.h>
#include <binder/TextOutput.h>
#include <errno.h>
@@ -69,9 +70,6 @@
// Note: must be kept in sync with android/os/StrictMode.java's PENALTY_GATHER
#define STRICT_MODE_PENALTY_GATHER (0x40 << 16)
-// Note: must be kept in sync with android/os/Parcel.java's EX_HAS_REPLY_HEADER
-#define EX_HAS_REPLY_HEADER -128
-
// XXX This can be made public if we want to provide
// support for typed data.
struct small_flat_data
@@ -1206,7 +1204,8 @@
status_t Parcel::writeNoException()
{
- return writeInt32(0);
+ binder::Status status;
+ return status.writeToParcel(this);
}
void Parcel::remove(size_t /*start*/, size_t /*amt*/)
@@ -1619,18 +1618,9 @@
int32_t Parcel::readExceptionCode() const
{
- int32_t exception_code = readAligned<int32_t>();
- if (exception_code == EX_HAS_REPLY_HEADER) {
- int32_t header_start = dataPosition();
- int32_t header_size = readAligned<int32_t>();
- // Skip over fat responses headers. Not used (or propagated) in
- // native code
- setDataPosition(header_start + header_size);
- // And fat response headers are currently only used when there are no
- // exceptions, so return no error:
- return 0;
- }
- return exception_code;
+ binder::Status status;
+ status.readFromParcel(*this);
+ return status.exceptionCode();
}
native_handle* Parcel::readNativeHandle() const