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Commit 82c53f0c authored by Adam Bookatz's avatar Adam Bookatz
Browse files

SystemProperty to create disabled usertypes 

For development, it helps to be able to create users whose usertype is
disabled or their limit has been reached.
We therefore introduce a system property for this.
It can only be used on debug builds.

Bug: 255793314
Bug: 137101239
Test: adb shell setprop debug.user.creation_override 1 && try to create disabled users
Change-Id: I6ab2aa80b0387b32f1b5fe5e9c8dd0096ed7bcd7
parent 502b19b3

core/java/android/os/UserManager.java

+10 −0
Original line number Diff line number Diff line
@@ -1612,6 +1612,16 @@ public class UserManager { 
    /** @hide */

    public static final String SYSTEM_USER_MODE_EMULATION_HEADLESS = "headless";



    /**

     * System Property used to override whether users can be created even if their type is disabled

     * or their limit is reached. Set value to 1 to enable.

     *

     * <p>Only used on non-user builds.

     *

     * @hide

     */

    public static final String DEV_CREATE_OVERRIDE_PROPERTY = "debug.user.creation_override";



    private static final String ACTION_CREATE_USER = "android.os.action.CREATE_USER";



    /**

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

+30 −27
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ package com.android.server.pm; 


import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;

import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;

import static android.os.UserManager.DEV_CREATE_OVERRIDE_PROPERTY;

import static android.os.UserManager.DISALLOW_USER_SWITCH;

import static android.os.UserManager.SYSTEM_USER_MODE_EMULATION_PROPERTY;
@@ -2807,7 +2808,8 @@ public class UserManagerService extends IUserManager.Stub { 
        synchronized (mUsersLock) {

            count = getAliveUsersExcludingGuestsCountLU();

        }

        return count >= UserManager.getMaxSupportedUsers();

        return count >= UserManager.getMaxSupportedUsers()

                && !isCreationOverrideEnabled();

    }



    /**
@@ -2817,15 +2819,16 @@ public class UserManagerService extends IUserManager.Stub { 
     * <p>For checking whether more profiles can be added to a particular parent use

     * {@link #canAddMoreProfilesToUser}.

     */

    private boolean canAddMoreUsersOfType(UserTypeDetails userTypeDetails) {

        if (!userTypeDetails.isEnabled()) {

    private boolean canAddMoreUsersOfType(@NonNull UserTypeDetails userTypeDetails) {

        if (!isUserTypeEnabled(userTypeDetails)) {

            return false;

        }

        final int max = userTypeDetails.getMaxAllowed();

        if (max == UserTypeDetails.UNLIMITED_NUMBER_OF_USERS) {

            return true; // Indicates that there is no max.

        }

        return getNumberOfUsersOfType(userTypeDetails.getName()) < max;

        return getNumberOfUsersOfType(userTypeDetails.getName()) < max

                || isCreationOverrideEnabled();

    }



    /**
@@ -2836,7 +2839,7 @@ public class UserManagerService extends IUserManager.Stub { 
    public int getRemainingCreatableUserCount(String userType) {

        checkQueryOrCreateUsersPermission("get the remaining number of users that can be added.");

        final UserTypeDetails type = mUserTypes.get(userType);

        if (type == null || !type.isEnabled()) {

        if (type == null || !isUserTypeEnabled(type)) {

            return 0;

        }

        synchronized (mUsersLock) {
@@ -2910,7 +2913,21 @@ public class UserManagerService extends IUserManager.Stub { 
    public boolean isUserTypeEnabled(String userType) {

        checkCreateUsersPermission("check if user type is enabled.");

        final UserTypeDetails userTypeDetails = mUserTypes.get(userType);

        return userTypeDetails != null && userTypeDetails.isEnabled();

        return userTypeDetails != null && isUserTypeEnabled(userTypeDetails);

    }



    /** Returns whether the creation of users of the given user type is enabled on this device. */

    private boolean isUserTypeEnabled(@NonNull UserTypeDetails userTypeDetails) {

        return userTypeDetails.isEnabled() || isCreationOverrideEnabled();

    }



    /**

     * Returns whether to almost-always allow creating users even beyond their limit or if disabled.

     * For Debug builds only.

     */

    private boolean isCreationOverrideEnabled() {

        return Build.isDebuggable()

                && SystemProperties.getBoolean(DEV_CREATE_OVERRIDE_PROPERTY, false);

    }



    @Override
@@ -2923,7 +2940,8 @@ public class UserManagerService extends IUserManager.Stub { 
    @Override

    public boolean canAddMoreProfilesToUser(String userType, @UserIdInt int userId,

            boolean allowedToRemoveOne) {

        return 0 < getRemainingCreatableProfileCount(userType, userId, allowedToRemoveOne);

        return 0 < getRemainingCreatableProfileCount(userType, userId, allowedToRemoveOne)

                || isCreationOverrideEnabled();

    }



    @Override
@@ -2941,7 +2959,7 @@ public class UserManagerService extends IUserManager.Stub { 
        checkQueryOrCreateUsersPermission(

                "get the remaining number of profiles that can be added to the given user.");

        final UserTypeDetails type = mUserTypes.get(userType);

        if (type == null || !type.isEnabled()) {

        if (type == null || !isUserTypeEnabled(type)) {

            return 0;

        }

        // Managed profiles have their own specific rules.
@@ -4400,7 +4418,7 @@ public class UserManagerService extends IUserManager.Stub { 
                    + ") indicated SYSTEM user, which cannot be created.");

            return null;

        }

        if (!userTypeDetails.isEnabled()) {

        if (!isUserTypeEnabled(userTypeDetails)) {

            throwCheckedUserOperationException(

                    "Cannot add a user of disabled type " + userType + ".",

                    UserManager.USER_OPERATION_ERROR_MAX_USERS);
@@ -4472,27 +4490,12 @@ public class UserManagerService extends IUserManager.Stub { 
                                    + " for user " + parentId,

                            UserManager.USER_OPERATION_ERROR_MAX_USERS);

                }

                // In legacy mode, restricted profile's parent can only be the owner user

                if (isRestricted && !UserManager.isSplitSystemUser()

                        && (parentId != UserHandle.USER_SYSTEM)) {

                if (isRestricted && (parentId != UserHandle.USER_SYSTEM)

                        && !isCreationOverrideEnabled()) {

                    throwCheckedUserOperationException(

                            "Cannot add restricted profile - parent user must be owner",

                            "Cannot add restricted profile - parent user must be system",

                            UserManager.USER_OPERATION_ERROR_UNKNOWN);

                }

                if (isRestricted && UserManager.isSplitSystemUser()) {

                    if (parent == null) {

                        throwCheckedUserOperationException(

                                "Cannot add restricted profile - parent user must be specified",

                                UserManager.USER_OPERATION_ERROR_UNKNOWN);

                    }

                    if (!parent.info.canHaveProfile()) {

                        throwCheckedUserOperationException(

                                "Cannot add restricted profile - profiles cannot be created for "

                                        + "the specified parent user id "

                                        + parentId,

                                UserManager.USER_OPERATION_ERROR_UNKNOWN);

                    }

                }



                userId = getNextAvailableId();

                Slog.i(LOG_TAG, "Creating user " + userId + " of type " + userType);