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-rw-r--r--services/sensorservice/SensorService.h155
1 files changed, 144 insertions, 11 deletions
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index e9ca3a5..9a573ae 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -27,6 +27,7 @@
#include <utils/AndroidThreads.h>
#include <utils/RefBase.h>
#include <utils/Looper.h>
+#include <utils/String8.h>
#include <binder/BinderService.h>
@@ -52,6 +53,9 @@
// For older HALs which don't support batching, use a smaller socket buffer size.
#define SOCKET_BUFFER_SIZE_NON_BATCHED 4 * 1024
+#define CIRCULAR_BUF_SIZE 10
+#define SENSOR_REGISTRATIONS_BUF_SIZE 20
+
struct sensors_poll_device_t;
struct sensors_module_t;
@@ -65,6 +69,51 @@ class SensorService :
{
friend class BinderService<SensorService>;
+ enum Mode {
+ // The regular operating mode where any application can register/unregister/call flush on
+ // sensors.
+ NORMAL = 0,
+ // This mode is only used for testing purposes. Not all HALs support this mode. In this
+ // mode, the HAL ignores the sensor data provided by physical sensors and accepts the data
+ // that is injected from the SensorService as if it were the real sensor data. This mode
+ // is primarily used for testing various algorithms like vendor provided SensorFusion,
+ // Step Counter and Step Detector etc. Typically in this mode, there will be a client
+ // (a SensorEventConnection) which will be injecting sensor data into the HAL. Normal apps
+ // can unregister and register for any sensor that supports injection. Registering to sensors
+ // that do not support injection will give an error.
+ // TODO(aakella) : Allow exactly one client to inject sensor data at a time.
+ DATA_INJECTION = 1,
+ // This mode is used only for testing sensors. Each sensor can be tested in isolation with
+ // the required sampling_rate and maxReportLatency parameters without having to think about
+ // the data rates requested by other applications. End user devices are always expected to be
+ // in NORMAL mode. When this mode is first activated, all active sensors from all connections
+ // are disabled. Calling flush() will return an error. In this mode, only the requests from
+ // selected apps whose package names are whitelisted are allowed (typically CTS apps). Only
+ // these apps can register/unregister/call flush() on sensors. If SensorService switches to
+ // NORMAL mode again, all sensors that were previously registered to are activated with the
+ // corresponding paramaters if the application hasn't unregistered for sensors in the mean
+ // time.
+ // NOTE: Non whitelisted app whose sensors were previously deactivated may still receive
+ // events if a whitelisted app requests data from the same sensor.
+ RESTRICTED = 2
+
+ // State Transitions supported.
+ // RESTRICTED <--- NORMAL ---> DATA_INJECTION
+ // ---> <---
+
+ // Shell commands to switch modes in SensorService.
+ // 1) Put SensorService in RESTRICTED mode with packageName .cts. If it is already in
+ // restricted mode it is treated as a NO_OP (and packageName is NOT changed).
+ // $ adb shell dumpsys sensorservice restrict .cts.
+ //
+ // 2) Put SensorService in DATA_INJECTION mode with packageName .xts. If it is already in
+ // data_injection mode it is treated as a NO_OP (and packageName is NOT changed).
+ // $ adb shell dumpsys sensorservice data_injection .xts.
+ //
+ // 3) Reset sensorservice back to NORMAL mode.
+ // $ adb shell dumpsys sensorservice enable
+ };
+
static const char* WAKE_LOCK_NAME;
static char const* getServiceName() ANDROID_API { return "sensorservice"; }
@@ -77,8 +126,10 @@ class SensorService :
virtual bool threadLoop();
// ISensorServer interface
- virtual Vector<Sensor> getSensorList();
- virtual sp<ISensorEventConnection> createSensorEventConnection();
+ virtual Vector<Sensor> getSensorList(const String16& opPackageName);
+ virtual sp<ISensorEventConnection> createSensorEventConnection(const String8& packageName,
+ int requestedMode, const String16& opPackageName);
+ virtual int isDataInjectionEnabled();
virtual status_t dump(int fd, const Vector<String16>& args);
class SensorEventConnection : public BnSensorEventConnection, public LooperCallback {
@@ -133,7 +184,6 @@ class SensorService :
// connection FD may be added to the Looper. The flags to set are determined by the internal
// state of the connection. FDs are added to the looper when wake-up sensors are registered
// (to poll for acknowledgements) and when write fails on the socket when there are too many
- // events (to poll when the FD is available for writing). FDs are removed when there is an
// error and the other end hangs up or when this client unregisters for this connection.
void updateLooperRegistration(const sp<Looper>& looper);
void updateLooperRegistrationLocked(const sp<Looper>& looper);
@@ -156,6 +206,8 @@ class SensorService :
// mWakeLockRefCount is reset to zero. needsWakeLock method will always return false, if
// this flag is set.
bool mDead;
+
+ bool mDataInjectionMode;
struct FlushInfo {
// The number of flush complete events dropped for this sensor is stored here.
// They are sent separately before the next batch of events.
@@ -169,14 +221,16 @@ class SensorService :
KeyedVector<int, FlushInfo> mSensorInfo;
sensors_event_t *mEventCache;
int mCacheSize, mMaxCacheSize;
-
+ String8 mPackageName;
+ const String16 mOpPackageName;
#if DEBUG_CONNECTIONS
int mEventsReceived, mEventsSent, mEventsSentFromCache;
int mTotalAcksNeeded, mTotalAcksReceived;
#endif
public:
- SensorEventConnection(const sp<SensorService>& service, uid_t uid);
+ SensorEventConnection(const sp<SensorService>& service, uid_t uid, String8 packageName,
+ bool isDataInjectionMode, const String16& opPackageName);
status_t sendEvents(sensors_event_t const* buffer, size_t count,
sensors_event_t* scratch,
@@ -190,6 +244,7 @@ class SensorService :
void dump(String8& result);
bool needsWakeLock();
void resetWakeLockRefCount();
+ String8 getPackageName() const;
uid_t getUid() const { return mUid; }
};
@@ -208,6 +263,7 @@ class SensorService :
void addPendingFlushConnection(const sp<SensorEventConnection>& connection);
void removeFirstPendingFlushConnection();
SensorEventConnection * getFirstPendingFlushConnection();
+ void clearAllPendingFlushConnections();
};
class SensorEventAckReceiver : public Thread {
@@ -217,6 +273,63 @@ class SensorService :
SensorEventAckReceiver(const sp<SensorService>& service): mService(service) {}
};
+ // sensor_event_t with only the data and the timestamp.
+ struct TrimmedSensorEvent {
+ union {
+ float *mData;
+ uint64_t mStepCounter;
+ };
+ // Timestamp from the sensor_event.
+ int64_t mTimestamp;
+ // HH:MM:SS local time at which this sensor event is read at SensorService. Useful
+ // for debugging.
+ int32_t mHour, mMin, mSec;
+
+ TrimmedSensorEvent(int sensorType);
+ static bool isSentinel(const TrimmedSensorEvent& event);
+
+ ~TrimmedSensorEvent() {
+ delete [] mData;
+ }
+ };
+
+ // A circular buffer of TrimmedSensorEvents. The size of this buffer is typically 10. The
+ // last N events generated from the sensor are stored in this buffer. The buffer is NOT
+ // cleared when the sensor unregisters and as a result one may see very old data in the
+ // dumpsys output but this is WAI.
+ class CircularBuffer {
+ int mNextInd;
+ int mSensorType;
+ int mBufSize;
+ TrimmedSensorEvent ** mTrimmedSensorEventArr;
+ public:
+ CircularBuffer(int sensor_event_type);
+ void addEvent(const sensors_event_t& sensor_event);
+ void printBuffer(String8& buffer) const;
+ bool populateLastEvent(sensors_event_t *event);
+ ~CircularBuffer();
+ };
+
+ struct SensorRegistrationInfo {
+ int32_t mSensorHandle;
+ String8 mPackageName;
+ bool mActivated;
+ int32_t mSamplingRateUs;
+ int32_t mMaxReportLatencyUs;
+ int32_t mHour, mMin, mSec;
+
+ SensorRegistrationInfo() : mPackageName() {
+ mSensorHandle = mSamplingRateUs = mMaxReportLatencyUs = INT32_MIN;
+ mHour = mMin = mSec = INT32_MIN;
+ mActivated = false;
+ }
+
+ static bool isSentinel(const SensorRegistrationInfo& info) {
+ return (info.mHour == INT32_MIN && info.mMin == INT32_MIN && info.mSec == INT32_MIN);
+ }
+ };
+
+ static int getNumEventsForSensorType(int sensor_event_type);
String8 getSensorName(int handle) const;
bool isVirtualSensor(int handle) const;
Sensor getSensorFromHandle(int handle) const;
@@ -231,8 +344,8 @@ class SensorService :
const sp<SensorEventConnection>& connection, int handle);
void cleanupAutoDisabledSensorLocked(const sp<SensorEventConnection>& connection,
sensors_event_t const* buffer, const int count);
- static bool canAccessSensor(const Sensor& sensor);
- static bool verifyCanAccessSensor(const Sensor& sensor, const char* operation);
+ static bool canAccessSensor(const Sensor& sensor, const char* operation,
+ const String16& opPackageName);
// SensorService acquires a partial wakelock for delivering events from wake up sensors. This
// method checks whether all the events from these wake up sensors have been delivered to the
// corresponding applications, if yes the wakelock is released.
@@ -261,6 +374,15 @@ class SensorService :
// to the output vector.
void populateActiveConnections(SortedVector< sp<SensorEventConnection> >* activeConnections);
+ // If SensorService is operating in RESTRICTED mode, only select whitelisted packages are
+ // allowed to register for or call flush on sensors. Typically only cts test packages are
+ // allowed.
+ bool isWhiteListedPackage(const String8& packageName);
+
+ // Reset the state of SensorService to NORMAL mode.
+ status_t resetToNormalMode();
+ status_t resetToNormalModeLocked();
+
// constants
Vector<Sensor> mSensorList;
Vector<Sensor> mUserSensorListDebug;
@@ -282,17 +404,28 @@ class SensorService :
bool mWakeLockAcquired;
sensors_event_t *mSensorEventBuffer, *mSensorEventScratch;
SensorEventConnection const **mMapFlushEventsToConnections;
+ Mode mCurrentOperatingMode;
+ // This packagaName is set when SensorService is in RESTRICTED or DATA_INJECTION mode. Only
+ // applications with this packageName are allowed to activate/deactivate or call flush on
+ // sensors. To run CTS this is can be set to ".cts." and only CTS tests will get access to
+ // sensors.
+ String8 mWhiteListedPackage;
// The size of this vector is constant, only the items are mutable
- KeyedVector<int32_t, sensors_event_t> mLastEventSeen;
+ KeyedVector<int32_t, CircularBuffer *> mLastEventSeen;
+ int mNextSensorRegIndex;
+ Vector<SensorRegistrationInfo> mLastNSensorRegistrations;
public:
void cleanupConnection(SensorEventConnection* connection);
status_t enable(const sp<SensorEventConnection>& connection, int handle,
- nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags);
+ nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags,
+ const String16& opPackageName);
status_t disable(const sp<SensorEventConnection>& connection, int handle);
- status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns);
- status_t flushSensor(const sp<SensorEventConnection>& connection);
+ status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns,
+ const String16& opPackageName);
+ status_t flushSensor(const sp<SensorEventConnection>& connection,
+ const String16& opPackageName);
};
// ---------------------------------------------------------------------------
generated by cgit v1.1 at 2024-05-30 14:18:18 +0000