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Commit fb788165 authored by Hanna Nizhnikava's avatar Hanna Nizhnikava Committed by Elliott Hughes
Browse files

Create utility method for converting sdk_sandbox_uid to app_uid 

Method is needed for further use in statsd mapping process.

Bug: 217695033
Test: atest installd_service_test
Change-Id: I508a58da5f8d2e32264002db515425134d18aece
parent 242ed1bb

libcutils/include/cutils/multiuser.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ extern appid_t multiuser_get_app_id(uid_t uid); 


extern uid_t multiuser_get_uid(userid_t user_id, appid_t app_id);

extern uid_t multiuser_get_sdk_sandbox_uid(userid_t user_id, appid_t app_id);

extern uid_t multiuser_convert_sdk_sandbox_to_app_uid(uid_t uid);



extern gid_t multiuser_get_cache_gid(userid_t user_id, appid_t app_id);

extern gid_t multiuser_get_ext_gid(userid_t user_id, appid_t app_id);

libcutils/multiuser.cpp

+10 −0
Original line number Diff line number Diff line
@@ -38,6 +38,16 @@ uid_t multiuser_get_sdk_sandbox_uid(userid_t user_id, appid_t app_id) { 
    }

}



uid_t multiuser_convert_sdk_sandbox_to_app_uid(uid_t uid) {

    appid_t app_id = multiuser_get_app_id(uid);

    int sdk_sandbox_offset = AID_SDK_SANDBOX_PROCESS_START - AID_APP_START;

    if (app_id >= AID_SDK_SANDBOX_PROCESS_START && app_id <= AID_SDK_SANDBOX_PROCESS_END) {

        return uid - sdk_sandbox_offset;

    } else {

        return -1;

    }

}



gid_t multiuser_get_cache_gid(userid_t user_id, appid_t app_id) {

    if (app_id >= AID_APP_START && app_id <= AID_APP_END) {

        return multiuser_get_uid(user_id, (app_id - AID_APP_START) + AID_CACHE_GID_START);

libcutils/multiuser_test.cpp

+18 −0
Original line number Diff line number Diff line
@@ -47,6 +47,24 @@ TEST(MultiuserTest, TestSdkSandboxUid) { 
    EXPECT_EQ(ERR_UID, multiuser_get_sdk_sandbox_uid(10, 50000));

}



TEST(MultiuserTest, TestSdkSandboxUidConvertation) {

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(0));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(1000));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(10000));

    EXPECT_EQ(10000U, multiuser_convert_sdk_sandbox_to_app_uid(20000));

    EXPECT_EQ(15000U, multiuser_convert_sdk_sandbox_to_app_uid(25000));

    EXPECT_EQ(19999U, multiuser_convert_sdk_sandbox_to_app_uid(29999));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(50000));



    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(1000000));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(1001000));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(1010000));

    EXPECT_EQ(1010000U, multiuser_convert_sdk_sandbox_to_app_uid(1020000));

    EXPECT_EQ(1015000U, multiuser_convert_sdk_sandbox_to_app_uid(1025000));

    EXPECT_EQ(1019999U, multiuser_convert_sdk_sandbox_to_app_uid(1029999));

    EXPECT_EQ(ERR_UID, multiuser_convert_sdk_sandbox_to_app_uid(1050000));

}



TEST(MultiuserTest, TestSplitUser) {

    EXPECT_EQ(0U, multiuser_get_user_id(0));

    EXPECT_EQ(0U, multiuser_get_user_id(1000));