am a2de7fc9: Merge "Prevent accidental unlocking of USB data transfer." into mnc-dev

* commit 'a2de7fc9fc0b96ba4db65ccf6c9684c8c27c2993':
  Prevent accidental unlocking of USB data transfer.

1 files changed, 7 insertions, 0 deletions

diff --git a/services/usb/java/com/android/server/usb/UsbService.java b/services/usb/java/com/android/server/usb/UsbService.java
index 7a3426c5e18e..987a79fc2d9f 100644
--- a/services/usb/java/com/android/server/usb/UsbService.java
+++ b/services/usb/java/com/android/server/usb/UsbService.java
@@ -273,6 +273,13 @@ public class UsbService extends IUsbManager.Stub {
     @Override
     public void setUsbDataUnlocked(boolean unlocked) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
+        // If attempt to change USB function while file transfer is restricted, ensure that
+        // usb data is always locked, and return.
+        UserManager userManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
+        if (userManager.hasUserRestriction(UserManager.DISALLOW_USB_FILE_TRANSFER)) {
+            if (mDeviceManager != null) mDeviceManager.setUsbDataUnlocked(false);
+            return;
+        }
         mDeviceManager.setUsbDataUnlocked(unlocked);
     }