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Commit faea76ff authored by Amith Yamasani's avatar Amith Yamasani
Browse files

Enforce a user limit 

By default only 1 user is allowed. Some devices permit more than 1.
Set the real user limit in a device overlay for config.xml

Change-Id: I2e0bffa13393b954fcd20e55b92f20de980c58c0
parent 9f750af6

core/res/res/values/config.xml

+1 −1
Original line number Diff line number Diff line
@@ -923,5 +923,5 @@ 
    <bool name="config_syncstorageengine_masterSyncAutomatically">true</bool>



    <!--  Maximum number of supported users -->

    <integer name="config_multiuserMaximumUsers">10</integer>

    <integer name="config_multiuserMaximumUsers">1</integer>

</resources>

services/java/com/android/server/pm/UserManagerService.java

+15 −0
Original line number Diff line number Diff line
@@ -237,6 +237,18 @@ public class UserManagerService extends IUserManager.Stub { 
        // TODO:

    }



    /**

     * Check if we've hit the limit of how many users can be created.

     */

    private boolean isUserLimitReached() {

        synchronized (mInstallLock) {

            int nUsers = mUsers.size();

            int userLimit = mContext.getResources().getInteger(

                    com.android.internal.R.integer.config_multiuserMaximumUsers);

            return nUsers >= userLimit;

        }

    }



    /**

     * Enforces that only the system UID or root's UID or apps that have the

     * {@link android.Manifest.permission.MANAGE_USERS MANAGE_USERS}
@@ -522,6 +534,9 @@ public class UserManagerService extends IUserManager.Stub { 
    @Override

    public UserInfo createUser(String name, int flags) {

        checkManageUsersPermission("Only the system can create users");



        if (isUserLimitReached()) return null;



        int userId = getNextAvailableId();

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

        File userPath = new File(mBaseUserPath, Integer.toString(userId));