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Remove support for converting from FDE to FBE

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Devices that launched with Android 10 or later require FBE (File Based
Encryption) from the beginning, so there's no need to support converting
to FBE after the fact anymore.  This was only ever a developer option,
so it probably wasn't used much.  And in any case, it's not used
anymore, as isConvertibleToFBE() is hard-coded to return false.  Besides
the fact that FBE has been required for several releases now, this
functionality was only ever available on devices that use FDE (Full Disk
Encryption), but FDE support has been removed from Android.

Therefore, remove this unused code.

Bug: 208476087
Change-Id: Ia765d6827e6144153c4e2a253b146ef2c75ca6fe
This commit is contained in:
Eric Biggers
2022-03-10 21:50:30 +00:00
parent 4041027433
commit b21d2216ac
10 changed files with 0 additions and 458 deletions
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1
src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java
View File

@@ -477,7 +477,6 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
controllers.add(new HdcpCheckingPreferenceController(context));
controllers.add(new BluetoothSnoopLogPreferenceController(context));
controllers.add(new OemUnlockPreferenceController(context, activity, fragment));
controllers.add(new FileEncryptionPreferenceController(context));
controllers.add(new PictureColorModePreferenceController(context, lifecycle));
controllers.add(new WebViewAppPreferenceController(context));
controllers.add(new CoolColorTemperaturePreferenceController(context));

85
src/com/android/settings/development/FileEncryptionPreferenceController.java
View File

@@ -1,85 +0,0 @@
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.development;
import android.content.Context;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.storage.IStorageManager;
import android.text.TextUtils;
import android.sysprop.CryptoProperties;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.development.DeveloperOptionsPreferenceController;
public class FileEncryptionPreferenceController extends DeveloperOptionsPreferenceController
implements PreferenceControllerMixin {
private static final String KEY_CONVERT_FBE = "convert_to_file_encryption";
private static final String KEY_STORAGE_MANAGER = "mount";
private final IStorageManager mStorageManager;
public FileEncryptionPreferenceController(Context context) {
super(context);
mStorageManager = getStorageManager();
}
@Override
public boolean isAvailable() {
if (mStorageManager == null) {
return false;
}
try {
return mStorageManager.isConvertibleToFBE();
} catch (RemoteException e) {
return false;
}
}
@Override
public String getPreferenceKey() {
return KEY_CONVERT_FBE;
}
@Override
public void updateState(Preference preference) {
if (CryptoProperties.type().orElse(CryptoProperties.type_values.NONE) !=
CryptoProperties.type_values.FILE) {
return;
}
mPreference.setEnabled(false);
mPreference.setSummary(
mContext.getResources().getString(R.string.convert_to_file_encryption_done));
}
private IStorageManager getStorageManager() {
try {
return IStorageManager.Stub.asInterface(
ServiceManager.getService(KEY_STORAGE_MANAGER));
} catch (VerifyError e) {
// Used for tests since Robolectric cannot initialize this class.
return null;
}
}
}