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 multiuser_get_user_id(uid_t uid)19userid_t multiuser_get_user_id(uid_t uid) { 20 return uid / MULTIUSER_APP_PER_USER_RANGE; 21 } 22 multiuser_get_app_id(uid_t uid)23appid_t multiuser_get_app_id(uid_t uid) { 24 return uid % MULTIUSER_APP_PER_USER_RANGE; 25 } 26 multiuser_get_uid(userid_t userId,appid_t appId)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 multiuser_get_shared_app_gid(uid_t id)31appid_t multiuser_get_shared_app_gid(uid_t id) { 32 return MULTIUSER_FIRST_SHARED_APPLICATION_GID + (id % MULTIUSER_APP_PER_USER_RANGE) 33 - MULTIUSER_FIRST_APPLICATION_UID; 34 35 } 36