Merge "Add missing ThreadDefs.h header"
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index baa817c..b14a838 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -409,6 +409,28 @@
return 0;
}
+#define DRIVER_FEATURES_PATH "/dev/binderfs/features/"
+bool ProcessState::isDriverFeatureEnabled(const DriverFeature feature) {
+ static const char* const names[] = {
+ [static_cast<int>(DriverFeature::ONEWAY_SPAM_DETECTION)] =
+ DRIVER_FEATURES_PATH "oneway_spam_detection",
+ };
+ int fd = open(names[static_cast<int>(feature)], O_RDONLY | O_CLOEXEC);
+ char on;
+ if (fd == -1) {
+ ALOGE_IF(errno != ENOENT, "%s: cannot open %s: %s", __func__,
+ names[static_cast<int>(feature)], strerror(errno));
+ return false;
+ }
+ if (read(fd, &on, sizeof(on)) == -1) {
+ ALOGE("%s: error reading to %s: %s", __func__,
+ names[static_cast<int>(feature)], strerror(errno));
+ return false;
+ }
+ close(fd);
+ return on == '1';
+}
+
status_t ProcessState::enableOnewaySpamDetection(bool enable) {
uint32_t enableDetection = enable ? 1 : 0;
if (ioctl(mDriverFD, BINDER_ENABLE_ONEWAY_SPAM_DETECTION, &enableDetection) == -1) {
@@ -452,7 +474,9 @@
uint32_t enable = DEFAULT_ENABLE_ONEWAY_SPAM_DETECTION;
result = ioctl(fd, BINDER_ENABLE_ONEWAY_SPAM_DETECTION, &enable);
if (result == -1) {
- ALOGV("Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
+ ALOGE_IF(ProcessState::isDriverFeatureEnabled(
+ ProcessState::DriverFeature::ONEWAY_SPAM_DETECTION),
+ "Binder ioctl to enable oneway spam detection failed: %s", strerror(errno));
}
return fd;
}
diff --git a/libs/binder/include/binder/IServiceManager.h b/libs/binder/include/binder/IServiceManager.h
index ea40db8..bb55831 100644
--- a/libs/binder/include/binder/IServiceManager.h
+++ b/libs/binder/include/binder/IServiceManager.h
@@ -56,8 +56,16 @@
static const int DUMP_FLAG_PROTO = 1 << 4;
/**
- * Retrieve an existing service, blocking for a few seconds
- * if it doesn't yet exist.
+ * Retrieve an existing service, blocking for a few seconds if it doesn't yet exist. This
+ * does polling. A more efficient way to make sure you unblock as soon as the service is
+ * available is to use waitForService or to use service notifications.
+ *
+ * Warning: when using this API, typically, you should call it in a loop. It's dangerous to
+ * assume that nullptr could mean that the service is not available. The service could just
+ * be starting. Generally, whether a service exists, this information should be declared
+ * externally (for instance, an Android feature might imply the existence of a service,
+ * a system property, or in the case of services in the VINTF manifest, it can be checked
+ * with isDeclared).
*/
virtual sp<IBinder> getService( const String16& name) const = 0;
diff --git a/libs/binder/include/binder/ProcessState.h b/libs/binder/include/binder/ProcessState.h
index cf8d8e4..0deee73 100644
--- a/libs/binder/include/binder/ProcessState.h
+++ b/libs/binder/include/binder/ProcessState.h
@@ -91,6 +91,12 @@
*/
size_t getThreadPoolMaxThreadCount() const;
+ enum class DriverFeature {
+ ONEWAY_SPAM_DETECTION,
+ };
+ // Determine whether a feature is supported by the binder driver.
+ static bool isDriverFeatureEnabled(const DriverFeature feature);
+
private:
static sp<ProcessState> init(const char* defaultDriver, bool requireDefault);
diff --git a/libs/binder/ndk/include_platform/android/binder_manager.h b/libs/binder/ndk/include_platform/android/binder_manager.h
index 2a66941..dfa8ea2 100644
--- a/libs/binder/ndk/include_platform/android/binder_manager.h
+++ b/libs/binder/ndk/include_platform/android/binder_manager.h
@@ -53,11 +53,19 @@
/**
* Gets a binder object with this specific instance name. Blocks for a couple of seconds waiting on
* it. This also implicitly calls AIBinder_incStrong (so the caller of this function is responsible
- * for calling AIBinder_decStrong).
+ * for calling AIBinder_decStrong). This does polling. A more efficient way to make sure you
+ * unblock as soon as the service is available is to use AIBinder_waitForService.
*
* WARNING: when using this API across an APEX boundary, do not use with unstable
* AIDL services. TODO(b/139325195)
*
+ * WARNING: when using this API, typically, you should call it in a loop. It's dangerous to
+ * assume that nullptr could mean that the service is not available. The service could just
+ * be starting. Generally, whether a service exists, this information should be declared
+ * externally (for instance, an Android feature might imply the existence of a service,
+ * a system property, or in the case of services in the VINTF manifest, it can be checked
+ * with AServiceManager_isDeclared).
+ *
* \param instance identifier of the service used to lookup the service.
*/
__attribute__((warn_unused_result)) AIBinder* AServiceManager_getService(const char* instance)
diff --git a/services/inputflinger/tests/fuzzers/Android.bp b/services/inputflinger/tests/fuzzers/Android.bp
index df4db19..455a1e2 100644
--- a/services/inputflinger/tests/fuzzers/Android.bp
+++ b/services/inputflinger/tests/fuzzers/Android.bp
@@ -42,4 +42,7 @@
srcs: [
"LatencyTrackerFuzzer.cpp",
],
+ fuzz_config: {
+ cc: ["android-framework-input@google.com"],
+ },
}