Merge "SurfaceFlinger: add a backdoor to override display config" into qt-dev (4afe731a) · Commits · e / os / platform_frameworks_native

services/surfaceflinger/SurfaceFlinger.cpp

+19 −1

Original line number	Diff line number	Diff line
		@@ -4993,7 +4993,7 @@ status_t SurfaceFlinger::CheckTransactCodeCredentials(uint32_t code) {
		}
		// Numbers from 1000 to 1034 are currently used for backdoors. The code
		// in onTransact verifies that the user is root, and has access to use SF.
		if (code >= 1000 && code <= 1034) {
		if (code >= 1000 && code <= 1035) {
		ALOGV("Accessing SurfaceFlinger through backdoor code: %u", code);
		return OK;
		}
		@@ -5316,6 +5316,19 @@ status_t SurfaceFlinger::onTransact(uint32_t code, const Parcel& data, Parcel* r
		}
		return NO_ERROR;
		}
		case 1035: {
		n = data.readInt32();
		mDebugDisplayConfigSetByBackdoor = false;
		if (n >= 0) {
		const auto displayToken = getInternalDisplayToken();
		status_t result = setAllowedDisplayConfigs(displayToken, {n});
		if (result != NO_ERROR) {
		return result;
		}
		mDebugDisplayConfigSetByBackdoor = true;
		}
		return NO_ERROR;
		}
		}
		}
		return err;
		@@ -5828,6 +5841,11 @@ status_t SurfaceFlinger::setAllowedDisplayConfigs(const sp<IBinder>& displayToke
		return BAD_VALUE;
		}

		if (mDebugDisplayConfigSetByBackdoor) {
		// ignore this request as config is overridden by backdoor
		return NO_ERROR;
		}

		postMessageSync(new LambdaMessage([&]() NO_THREAD_SAFETY_ANALYSIS {
		const auto display = getDisplayDeviceLocked(displayToken);
		if (!display) {

+3 −0

Original line number	Diff line number	Diff line
		@@ -1142,6 +1142,9 @@ private:
		Hwc2::impl::PowerAdvisor mPowerAdvisor;

		std::unique_ptr<RefreshRateOverlay> mRefreshRateOverlay;

		// Flag used to set override allowed display configs from backdoor
		bool mDebugDisplayConfigSetByBackdoor = false;
		};

		} // namespace android