multiuser.c revision 9685194fc94510a33201aee9b80c23f206ccfe67 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <cutils/multiuser.h>
18
19userid_t multiuser_get_user_id(uid_t uid) {
20    return uid / MULTIUSER_APP_PER_USER_RANGE;
21}
22
23appid_t multiuser_get_app_id(uid_t uid) {
24    return uid % MULTIUSER_APP_PER_USER_RANGE;
25}
26
27uid_t multiuser_get_uid(userid_t userId, appid_t appId) {
28    return userId * MULTIUSER_APP_PER_USER_RANGE + (appId % MULTIUSER_APP_PER_USER_RANGE);
29}
30