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Disallow OEM unlock when DISALLOW_FACTORY_RESET applies

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Bug: 28339424
Change-Id: I4b6dc6f186ea60a13e778f52d574e615b0b19b74
This commit is contained in:
Mahaver Chopra
2016-05-17 18:53:09 +01:00
parent 8cbec3de0f
commit 830e32cdcc
2 changed files with 21 additions and 1 deletions
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13
services/core/java/com/android/server/PersistentDataBlockService.java
View File

@@ -146,6 +146,15 @@ public class PersistentDataBlockService extends SystemService {
"Only the Admin user is allowed to change OEM unlock state");
}
}
private void enforceFactoryResetAllowed() {
final boolean isOemUnlockRestricted = UserManager.get(mContext)
.hasUserRestriction(UserManager.DISALLOW_FACTORY_RESET);
if (isOemUnlockRestricted) {
throw new SecurityException("OEM unlock is disallowed by DISALLOW_FACTORY_RESET");
}
}
private int getTotalDataSizeLocked(DataInputStream inputStream) throws IOException {
// skip over checksum
inputStream.skipBytes(DIGEST_SIZE_BYTES);
@@ -452,7 +461,9 @@ public class PersistentDataBlockService extends SystemService {
Settings.Global.OEM_UNLOCK_DISALLOWED, 0) == 1) {
throw new SecurityException("OEM unlock has been disallowed.");
}
if (enabled) {
enforceFactoryResetAllowed();
}
synchronized (mLock) {
doSetOemUnlockEnabledLocked(enabled);
computeAndWriteDigestLocked();

9
services/core/java/com/android/server/pm/UserRestrictionsUtils.java
View File

@@ -33,6 +33,7 @@ import android.os.RemoteException;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.service.persistentdata.PersistentDataBlockManager;
import android.telephony.SubscriptionInfo;
import android.telephony.SubscriptionManager;
import android.util.Log;
@@ -424,6 +425,14 @@ public class UserRestrictionsUtils {
android.provider.Settings.Global.SAFE_BOOT_DISALLOWED,
newValue ? 1 : 0);
break;
case UserManager.DISALLOW_FACTORY_RESET:
if (newValue) {
PersistentDataBlockManager manager = (PersistentDataBlockManager) context
.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);
if (manager != null) {
manager.setOemUnlockEnabled(false);
}
}
}
} finally {
Binder.restoreCallingIdentity(id);