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Commit 9cbfc9e2 authored by Fyodor Kupolov's avatar Fyodor Kupolov
Browse files

Added DISALLOW_RUN_IN_BACKGROUND user restriction 

It forces the user to stop instead of going into the background. Also
changed behavior of stopUser method. Now it also attempts to stop related
users along with the specified userId.

Based on ag/807976, with the only difference that it's now a user restriction.

Bug: 24579258
Bug: 24708668
Change-Id: I357298908816fc58feeed83b7e9979fc33d25da6
parent 6449a956

cmds/am/src/com/android/commands/am/Am.java

+14 −3
Original line number Diff line number Diff line
@@ -154,7 +154,7 @@ public class Am extends BaseCommand { 
                "       am switch-user <USER_ID>\n" +

                "       am start-user <USER_ID>\n" +

                "       am unlock-user <USER_ID> [TOKEN_HEX]\n" +

                "       am stop-user [-w] <USER_ID>\n" +

                "       am stop-user [-w] [-f] <USER_ID>\n" +

                "       am stack start <DISPLAY_ID> <INTENT>\n" +

                "       am stack movetask <TASK_ID> <STACK_ID> [true|false]\n" +

                "       am stack resize <STACK_ID> <LEFT,TOP,RIGHT,BOTTOM>\n" +
@@ -290,6 +290,7 @@ public class Am extends BaseCommand { 
                "am stop-user: stop execution of USER_ID, not allowing it to run any\n" +

                "  code until a later explicit start or switch to it.\n" +

                "  -w: wait for stop-user to complete.\n" +

                "  -f: force stop even if there are related users that cannot be stopped.\n" +

                "\n" +

                "am stack start: start a new activity on <DISPLAY_ID> using <INTENT>.\n" +

                "\n" +
@@ -1131,10 +1132,13 @@ public class Am extends BaseCommand { 


    private void runStopUser() throws Exception {

        boolean wait = false;

        String opt = null;

        boolean force = false;

        String opt;

        while ((opt = nextOption()) != null) {

            if ("-w".equals(opt)) {

                wait = true;

            } else if ("-f".equals(opt)) {

                force = true;

            } else {

                System.err.println("Error: unknown option: " + opt);

                return;
@@ -1143,7 +1147,7 @@ public class Am extends BaseCommand { 
        int user = Integer.parseInt(nextArgRequired());

        StopUserCallback callback = wait ? new StopUserCallback() : null;



        int res = mAm.stopUser(user, callback);

        int res = mAm.stopUser(user, force, callback);

        if (res != ActivityManager.USER_OP_SUCCESS) {

            String txt = "";

            switch (res) {
@@ -1153,6 +1157,13 @@ public class Am extends BaseCommand { 
                case ActivityManager.USER_OP_UNKNOWN_USER:

                    txt = " (Unknown user " + user + ")";

                    break;

                case ActivityManager.USER_OP_ERROR_IS_SYSTEM:

                    txt = " (System user cannot be stopped)";

                    break;

                case ActivityManager.USER_OP_ERROR_RELATED_USERS_CANNOT_STOP:

                    txt = " (Can't stop user " + user

                            + " - one of its related users can't be stopped)";

                    break;

            }

            System.err.println("Switch failed: " + res + txt);

        } else if (callback != null) {

core/java/android/app/ActivityManager.java

+6 −0
Original line number Diff line number Diff line
@@ -265,6 +265,12 @@ public class ActivityManager { 
    /** @hide User operation call: given user id is the current user, can't be stopped. */

    public static final int USER_OP_IS_CURRENT = -2;



    /** @hide User operation call: system user can't be stopped. */

    public static final int USER_OP_ERROR_IS_SYSTEM = -3;



    /** @hide User operation call: one of related users cannot be stopped. */

    public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4;



    /** @hide Process does not exist. */

    public static final int PROCESS_STATE_NONEXISTENT = -1;

core/java/android/app/ActivityManagerNative.java

+5 −2
Original line number Diff line number Diff line
@@ -1981,9 +1981,10 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM 
        case STOP_USER_TRANSACTION: {

            data.enforceInterface(IActivityManager.descriptor);

            int userid = data.readInt();

            boolean force = data.readInt() != 0;

            IStopUserCallback callback = IStopUserCallback.Stub.asInterface(

                    data.readStrongBinder());

            int result = stopUser(userid, callback);

            int result = stopUser(userid, force, callback);

            reply.writeNoException();

            reply.writeInt(result);

            return true;
@@ -5287,11 +5288,13 @@ class ActivityManagerProxy implements IActivityManager 
        return result;

    }



    public int stopUser(int userid, IStopUserCallback callback) throws RemoteException {

    public int stopUser(int userid, boolean force, IStopUserCallback callback)

            throws RemoteException {

        Parcel data = Parcel.obtain();

        Parcel reply = Parcel.obtain();

        data.writeInterfaceToken(IActivityManager.descriptor);

        data.writeInt(userid);

        data.writeInt(force ? 1 : 0);

        data.writeStrongInterface(callback);

        mRemote.transact(STOP_USER_TRANSACTION, data, reply, 0);

        reply.readException();

core/java/android/app/IActivityManager.java

+1 −1
Original line number Diff line number Diff line
@@ -391,7 +391,7 @@ public interface IActivityManager extends IInterface { 
    public boolean switchUser(int userid) throws RemoteException;

    public boolean startUserInBackground(int userid) throws RemoteException;

    public boolean unlockUser(int userid, byte[] token) throws RemoteException;

    public int stopUser(int userid, IStopUserCallback callback) throws RemoteException;

    public int stopUser(int userid, boolean force, IStopUserCallback callback) throws RemoteException;

    public UserInfo getCurrentUser() throws RemoteException;

    public boolean isUserRunning(int userid, int flags) throws RemoteException;

    public int[] getRunningUserIds() throws RemoteException;

core/java/android/os/UserManager.java

+13 −0
Original line number Diff line number Diff line
@@ -486,6 +486,19 @@ public class UserManager { 
     */

    public static final String DISALLOW_RECORD_AUDIO = "no_record_audio";



    /**

     * Specifies if a user is not allowed to run in the background and should be stopped during

     * user switch. The default value is <code>false</code>.

     *

     * <p>This restriction can be set by device owners and profile owners.

     *

     * @see DevicePolicyManager#addUserRestriction(ComponentName, String)

     * @see DevicePolicyManager#clearUserRestriction(ComponentName, String)

     * @see #getUserRestrictions()

     * @hide

     */

    public static final String DISALLOW_RUN_IN_BACKGROUND = "no_run_in_background";



    /**

     * Specifies if a user is not allowed to use the camera.

     *