Merge "Fix multi-user support in keyguard."

package com.android.internal.widget;

import android.Manifest;

import android.app.ActivityManagerNative;

import android.app.admin.DevicePolicyManager;

import android.appwidget.AppWidgetManager;

    private DevicePolicyManager mDevicePolicyManager;

    private ILockSettings mLockSettingsService;

    private final boolean mMultiUserMode;

    // The current user is set by KeyguardViewMediator and shared by all LockPatternUtils.

    private static volatile int sCurrentUserId = UserHandle.USER_NULL;

    public LockPatternUtils(Context context) {

        mContext = context;

        mContentResolver = context.getContentResolver();

        // If this is being called by the system or by an application like keyguard that

        // has permision INTERACT_ACROSS_USERS, then LockPatternUtils will operate in multi-user

        // mode where calls are for the current user rather than the user of the calling process.

        mMultiUserMode = context.checkCallingOrSelfPermission(

            Manifest.permission.INTERACT_ACROSS_USERS_FULL) == PackageManager.PERMISSION_GRANTED;

    }

    private ILockSettings getLockSettings() {

    }

    private int getCurrentOrCallingUserId() {

        int callingUid = Binder.getCallingUid();

        if (callingUid == android.os.Process.SYSTEM_UID) {

        if (mMultiUserMode) {

            // TODO: This is a little inefficient. See if all users of this are able to

            // handle USER_CURRENT and pass that instead.

            return getCurrentUser();

        } else {

            return UserHandle.getUserId(callingUid);

            return UserHandle.getCallingUserId();

        }

    }