diff options
| -rw-r--r-- | include/cutils/multiuser.h | 39 | ||||
| -rw-r--r-- | libcutils/Android.mk | 3 | ||||
| -rw-r--r-- | libcutils/multiuser.c | 32 |
3 files changed, 73 insertions, 1 deletions
diff --git a/include/cutils/multiuser.h b/include/cutils/multiuser.h new file mode 100644 index 0000000..191d80c --- /dev/null +++ b/include/cutils/multiuser.h @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __CUTILS_MULTIUSER_H +#define __CUTILS_MULTIUSER_H + +#ifdef __cplusplus +extern "C" { +#endif + +// NOTE: keep in sync with android.os.UserId + +#define MULTIUSER_APP_PER_USER_RANGE 100000 + +typedef uid_t userid_t; +typedef uid_t appid_t; + +extern userid_t getUserId(uid_t uid); +extern appid_t getAppId(uid_t uid); +extern uid_t getUid(userid_t userId, appid_t appId); + +#ifdef __cplusplus +} +#endif + +#endif /* __CUTILS_MULTIUSER_H */ diff --git a/libcutils/Android.mk b/libcutils/Android.mk index 5c227b6..6d525ba 100644 --- a/libcutils/Android.mk +++ b/libcutils/Android.mk @@ -50,7 +50,8 @@ commonSources := \ threads.c \ sched_policy.c \ iosched_policy.c \ - str_parms.c + str_parms.c \ + multiuser.c commonHostSources := \ ashmem-host.c diff --git a/libcutils/multiuser.c b/libcutils/multiuser.c new file mode 100644 index 0000000..be9304d --- /dev/null +++ b/libcutils/multiuser.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <cutils/multiuser.h> + +userid_t getUserId(uid_t uid) { + return uid / MULTIUSER_APP_PER_USER_RANGE; +} + +appid_t getAppId(uid_t uid) { + return uid % MULTIUSER_APP_PER_USER_RANGE; +} + +uid_t getUid(userid_t userId, appid_t appId) { + return userId * MULTIUSER_APP_PER_USER_RANGE + (appId % MULTIUSER_APP_PER_USER_RANGE); +} |