Merge "Enforce a user limit" into jb-mr1-dev

    <bool name="config_syncstorageengine_masterSyncAutomatically">true</bool>

    <!--  Maximum number of supported users -->

    <integer name="config_multiuserMaximumUsers">10</integer>

    <integer name="config_multiuserMaximumUsers">1</integer>

</resources>

        // TODO:

    }

    /**

     * Check if we've hit the limit of how many users can be created.

     */

    private boolean isUserLimitReached() {

        synchronized (mInstallLock) {

            int nUsers = mUsers.size();

            int userLimit = mContext.getResources().getInteger(

                    com.android.internal.R.integer.config_multiuserMaximumUsers);

            return nUsers >= userLimit;

        }

    }

    /**

     * Enforces that only the system UID or root's UID or apps that have the

     * {@link android.Manifest.permission.MANAGE_USERS MANAGE_USERS}

    @Override

    public UserInfo createUser(String name, int flags) {

        checkManageUsersPermission("Only the system can create users");

        if (isUserLimitReached()) return null;

        int userId = getNextAvailableId();

        UserInfo userInfo = new UserInfo(userId, name, null, flags);

        File userPath = new File(mBaseUserPath, Integer.toString(userId));