user info

 https://source.android.google.cn/devices/automotive/users_accounts/multi_user

https://source.android.google.cn/devices/tech/admin/multi-user#android-automotive-multi-user

 

/** @hide A user id constant to indicate the "system" user of the device */
79    public static final @UserIdInt int USER_SYSTEM = 0;

// Create the system user
UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags);

 

userId = getNextAvailableId();

@VisibleForTesting
205    static final int MIN_USER_ID = 10;
206    // We need to keep process uid within Integer.MAX_VALUE.
207    @VisibleForTesting
208    static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE

for (int i = MIN_USER_ID; i < MAX_USER_ID; i++) {
3448            if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) {
3449                return i;
3450            }
3451        }

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