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Remove more FDE methods from StorageManager

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Now that these methods are no longer called, and none of them are a
public API or have @UnsupportedAppUsage, they can be removed.

inCryptKeeperBounce() actually had one known app user via reflection,
despite the method not having @UnsupportedAppUsage.  However, that user
only made the call if Build.VERSION.SDK_INT < VERSION_CODES.P, so it is
not being used anymore.

Bug: 208476087
Change-Id: Idc218e5f355bb61257b07cf5b5b6df5f4c6ece11
This commit is contained in:
Eric Biggers
2022-04-01 18:38:34 +00:00
parent 234ee35c93
commit bd13f84152
2 changed files with 8 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
core/java/android/os/storage/StorageManager.java
View File

@@ -1578,18 +1578,13 @@ public class StorageManager {
}
/** {@hide}
* Is this device encryptable or already encrypted?
* @return true for encryptable or encrypted
* false not encrypted and not encryptable
*/
public static boolean isEncryptable() {
return RoSystemProperties.CRYPTO_ENCRYPTABLE;
}
/** {@hide}
* Is this device already encrypted?
* @return true for encrypted. (Implies isEncryptable() == true)
* false not encrypted
* Is this device encrypted?
* <p>
* Note: all devices launching with Android 10 (API level 29) or later are
* required to be encrypted. This should only ever return false for
* in-development devices on which encryption has not yet been configured.
*
* @return true if encrypted, false if not encrypted
*/
public static boolean isEncrypted() {
return RoSystemProperties.CRYPTO_ENCRYPTED;
@@ -1598,7 +1593,7 @@ public class StorageManager {
/** {@hide}
* Is this device file encrypted?
* @return true for file encrypted. (Implies isEncrypted() == true)
* false not encrypted or block encrypted
* false not encrypted or using "managed" encryption
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
public static boolean isFileEncryptedNativeOnly() {
@@ -1608,54 +1603,6 @@ public class StorageManager {
return RoSystemProperties.CRYPTO_FILE_ENCRYPTED;
}
/** {@hide}
* Is this device block encrypted?
* @return true for block encrypted. (Implies isEncrypted() == true)
* false not encrypted or file encrypted
*/
public static boolean isBlockEncrypted() {
return false;
}
/** {@hide}
* Is this device block encrypted with credentials?
* @return true for crediential block encrypted.
* (Implies isBlockEncrypted() == true)
* false not encrypted, file encrypted or default block encrypted
*/
public static boolean isNonDefaultBlockEncrypted() {
return false;
}
/** {@hide}
* Is this device in the process of being block encrypted?
* @return true for encrypting.
* false otherwise
* Whether device isEncrypted at this point is undefined
* Note that only system services and CryptKeeper will ever see this return
* true - no app will ever be launched in this state.
* Also note that this state will not change without a teardown of the
* framework, so no service needs to check for changes during their lifespan
*/
public static boolean isBlockEncrypting() {
return false;
}
/** {@hide}
* Is this device non default block encrypted and in the process of
* prompting for credentials?
* @return true for prompting for credentials.
* (Implies isNonDefaultBlockEncrypted() == true)
* false otherwise
* Note that only system services and CryptKeeper will ever see this return
* true - no app will ever be launched in this state.
* Also note that this state will not change without a teardown of the
* framework, so no service needs to check for changes during their lifespan
*/
public static boolean inCryptKeeperBounce() {
return false;
}
/** {@hide} */
public static boolean isFileEncryptedEmulatedOnly() {
return SystemProperties.getBoolean(StorageManager.PROP_EMULATE_FBE, false);

4
core/java/com/android/internal/os/RoSystemProperties.java
View File

@@ -60,14 +60,10 @@ public class RoSystemProperties {
public static final CryptoProperties.type_values CRYPTO_TYPE =
CryptoProperties.type().orElse(CryptoProperties.type_values.NONE);
// These are pseudo-properties
public static final boolean CRYPTO_ENCRYPTABLE =
CRYPTO_STATE != CryptoProperties.state_values.UNSUPPORTED;
public static final boolean CRYPTO_ENCRYPTED =
CRYPTO_STATE == CryptoProperties.state_values.ENCRYPTED;
public static final boolean CRYPTO_FILE_ENCRYPTED =
CRYPTO_TYPE == CryptoProperties.type_values.FILE;
public static final boolean CRYPTO_BLOCK_ENCRYPTED =
CRYPTO_TYPE == CryptoProperties.type_values.BLOCK;
public static final boolean CONTROL_PRIVAPP_PERMISSIONS_LOG =
"log".equalsIgnoreCase(CONTROL_PRIVAPP_PERMISSIONS);