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Merge "Binder: allow stability downgrade" am: 7236cf6dca

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Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1651544

Change-Id: Ie9c185ebf71687fbc7c4036ba9296b32e9a63383
This commit is contained in:
Steven Moreland
2021-03-26 02:28:36 +00:00
committed by Automerger Merge Worker
parent fadfebd06a 7236cf6dca
commit 0852de16cb
2 changed files with 23 additions and 0 deletions
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10
core/java/android/os/Binder.java
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@@ -542,6 +542,16 @@ public class Binder implements IBinder {
@SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
public final native void markVintfStability();
/**
* Use a VINTF-stability binder w/o VINTF requirements. Should be called
* on a binder before it is sent out of process.
*
* This must be called before the object is sent to another process.
*
* @hide
*/
public final native void forceDowngradeToSystemStability();
/**
* Flush any Binder commands pending in the current thread to the kernel
* driver. This can be

13
core/jni/android_util_Binder.cpp
View File

@@ -486,9 +486,15 @@ public:
}
void markVintf() {
AutoMutex _l(mLock);
mVintf = true;
}
void forceDowngradeToSystemStability() {
AutoMutex _l(mLock);
mVintf = false;
}
sp<IBinder> getExtension() {
AutoMutex _l(mLock);
sp<JavaBBinder> b = mBinder.promote();
@@ -1013,6 +1019,12 @@ static void android_os_Binder_markVintfStability(JNIEnv* env, jobject clazz) {
jbh->markVintf();
}
static void android_os_Binder_forceDowngradeToSystemStability(JNIEnv* env, jobject clazz) {
JavaBBinderHolder* jbh =
(JavaBBinderHolder*) env->GetLongField(clazz, gBinderOffsets.mObject);
jbh->forceDowngradeToSystemStability();
}
static void android_os_Binder_flushPendingCommands(JNIEnv* env, jobject clazz)
{
IPCThreadState::self()->flushCommands();
@@ -1076,6 +1088,7 @@ static const JNINativeMethod gBinderMethods[] = {
{ "clearCallingWorkSource", "()J", (void*)android_os_Binder_clearCallingWorkSource },
{ "restoreCallingWorkSource", "(J)V", (void*)android_os_Binder_restoreCallingWorkSource },
{ "markVintfStability", "()V", (void*)android_os_Binder_markVintfStability},
{ "forceDowngradeToSystemStability", "()V", (void*)android_os_Binder_forceDowngradeToSystemStability},
{ "flushPendingCommands", "()V", (void*)android_os_Binder_flushPendingCommands },
{ "getNativeBBinderHolder", "()J", (void*)android_os_Binder_getNativeBBinderHolder },
{ "getNativeFinalizer", "()J", (void*)android_os_Binder_getNativeFinalizer },