diff --git a/include/private/ui/SharedState.h b/include/private/ui/SharedState.h
index 3bc7979..c9f6b5e 100644
--- a/include/private/ui/SharedState.h
+++ b/include/private/ui/SharedState.h
@@ -98,6 +98,8 @@
 
 struct per_client_cblk_t   // 4KB max
 {
+    per_client_cblk_t() : lock(Mutex::SHARED) { }
+
                 Mutex           lock;
                 Condition       cv;
                 layer_cblk_t    layers[NUM_LAYERS_MAX] __attribute__((aligned(32)));
diff --git a/include/ui/EventHub.h b/include/ui/EventHub.h
index e12c4f1..d9c0af2 100644
--- a/include/ui/EventHub.h
+++ b/include/ui/EventHub.h
@@ -73,6 +73,9 @@
     int getKeycodeState(int key) const;
     int getKeycodeState(int32_t deviceId, int key) const;
     
+    status_t scancodeToKeycode(int32_t deviceId, int scancode,
+            int32_t* outKeycode, uint32_t* outFlags) const;
+    
     // special type codes when devices are added/removed.
     enum {
         DEVICE_ADDED = 0x10000000,
@@ -121,7 +124,7 @@
     mutable Mutex   mLock;
     
     bool            mHaveFirstKeyboard;
-    int32_t         mFirstKeyboardId; // the API is that the build in keyboard is id 0, so map it
+    int32_t         mFirstKeyboardId; // the API is that the built-in keyboard is id 0, so map it
     
     struct device_ent {
         device_t* device;
diff --git a/include/utils/threads.h b/include/utils/threads.h
index 5c03965..e9b0788 100644
--- a/include/utils/threads.h
+++ b/include/utils/threads.h
@@ -190,8 +190,14 @@
  */
 class Mutex {
 public:
+    enum {
+        NORMAL = 0,
+        SHARED = 1
+    };
+    
                 Mutex();
                 Mutex(const char* name);
+                Mutex(int type, const char* name = NULL);
                 ~Mutex();
 
     // lock or unlock the mutex
@@ -235,6 +241,17 @@
 inline Mutex::Mutex(const char* name) {
     pthread_mutex_init(&mMutex, NULL);
 }
+inline Mutex::Mutex(int type, const char* name) {
+    if (type == SHARED) {
+        pthread_mutexattr_t attr;
+        pthread_mutexattr_init(&attr);
+        pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+        pthread_mutex_init(&mMutex, &attr);
+        pthread_mutexattr_destroy(&attr);
+    } else {
+        pthread_mutex_init(&mMutex, NULL);
+    }
+}
 inline Mutex::~Mutex() {
     pthread_mutex_destroy(&mMutex);
 }
diff --git a/libs/ui/EventHub.cpp b/libs/ui/EventHub.cpp
index 13c30a7..a72f055 100644
--- a/libs/ui/EventHub.cpp
+++ b/libs/ui/EventHub.cpp
@@ -240,6 +240,35 @@
     return 0;
 }
 
+status_t EventHub::scancodeToKeycode(int32_t deviceId, int scancode,
+        int32_t* outKeycode, uint32_t* outFlags) const
+{
+    AutoMutex _l(mLock);
+    device_t* device = getDevice(deviceId);
+    
+    if (device != NULL && device->layoutMap != NULL) {
+        status_t err = device->layoutMap->map(scancode, outKeycode, outFlags);
+        if (err == NO_ERROR) {
+            return NO_ERROR;
+        }
+    }
+    
+    if (mHaveFirstKeyboard) {
+        device = getDevice(mFirstKeyboardId);
+        
+        if (device != NULL && device->layoutMap != NULL) {
+            status_t err = device->layoutMap->map(scancode, outKeycode, outFlags);
+            if (err == NO_ERROR) {
+                return NO_ERROR;
+            }
+        }
+    }
+    
+    *outKeycode = 0;
+    *outFlags = 0;
+    return NAME_NOT_FOUND;
+}
+
 EventHub::device_t* EventHub::getDevice(int32_t deviceId) const
 {
     if (deviceId == 0) deviceId = mFirstKeyboardId;
diff --git a/libs/utils/BackupData.cpp b/libs/utils/BackupData.cpp
index cce754a..be04777 100644
--- a/libs/utils/BackupData.cpp
+++ b/libs/utils/BackupData.cpp
@@ -298,10 +298,12 @@
     }
     if (m_header.entity.dataSize > 0) {
         int pos = lseek(m_fd, m_dataEndPos, SEEK_SET);
-        return pos == -1 ? (int)errno : (int)NO_ERROR;
-    } else {
-        return NO_ERROR;
+        if (pos == -1) {
+            return errno;
+        }
     }
+    SKIP_PADDING();
+    return NO_ERROR;
 }
 
 ssize_t