Fix UsbSerialReder for multi-user

When UsbSerialReader checks for package it needs to request package for
the calling user, because UsbSerialReader runs in system_proccess under
u0 and the calling package may not be installed for that user.

Fixes: 146079090
Test: flash and verify that UsbDevice#getSerial() returns correct string
(used to return null before the fix)

Change-Id: I637673165dd364f4728e587a59897184ea5b5620

1 files changed, 3 insertions, 1 deletions

diff --git a/services/usb/java/com/android/server/usb/UsbSerialReader.java b/services/usb/java/com/android/server/usb/UsbSerialReader.java
index 86016bb6036f..095e8e9b7b5b 100644
--- a/services/usb/java/com/android/server/usb/UsbSerialReader.java
+++ b/services/usb/java/com/android/server/usb/UsbSerialReader.java
@@ -75,12 +75,14 @@ class UsbSerialReader extends IUsbSerialReader.Stub {
         if (uid != Process.SYSTEM_UID) {
             enforcePackageBelongsToUid(uid, packageName);
 
+            UserHandle user = Binder.getCallingUserHandle();
             int packageTargetSdkVersion;
             long token = Binder.clearCallingIdentity();
             try {
                 PackageInfo pkg;
                 try {
-                    pkg = mContext.getPackageManager().getPackageInfo(packageName, 0);
+                    pkg = mContext.getPackageManager()
+                            .getPackageInfoAsUser(packageName, 0, user.getIdentifier());
                 } catch (PackageManager.NameNotFoundException e) {
                     throw new RemoteException("package " + packageName + " cannot be found");
                 }