More file-based encryption work.
Add granular StorageManager APIs for key creation/destruction and
unlocking/locking. Start passing through an opaque token as part
of the unlock command, but leave it empty for now. We now have a
separate "prepare" method that sanity checks that user directories
are correctly setup.
Define a handful of system properties used for marking devices that
should be operating in FBE mode, and if they're emulating FBE. Wire
a command to "sm", but persisting will come later.
Start using new "encryptionAware" flag on apps previously marked with
coreApp flag, which were apps running in the legacy CryptKeeper
model. Small tweaks to handle non-encryptionAware voice interaction
services. Switch PackageManager to consult StorageManager about the
unlocked state of a user.
Bug: 22358539
Change-Id: Ic2865f9b81c10ea39369c441422f7427a3c3c3d6
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index 9a87abe..3a1d2de 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -1563,13 +1563,15 @@
userInfo.restrictedProfileParentId = parent.restrictedProfileParentId;
}
}
+
final StorageManager storage = mContext.getSystemService(StorageManager.class);
+ storage.createUserKey(userId, userInfo.serialNumber);
for (VolumeInfo vol : storage.getWritablePrivateVolumes()) {
final String volumeUuid = vol.getFsUuid();
try {
final File userDir = Environment.getDataUserDirectory(volumeUuid,
userId);
- prepareUserDirectory(mContext, volumeUuid, userId);
+ storage.prepareUserStorage(volumeUuid, userId, userInfo.serialNumber);
enforceSerialNumber(userDir, userInfo.serialNumber);
} catch (IOException e) {
Log.wtf(LOG_TAG, "Failed to create user directory on " + volumeUuid, e);
@@ -1797,8 +1799,7 @@
}
private void removeUserStateLILP(final int userHandle) {
- mContext.getSystemService(StorageManager.class)
- .deleteUserKey(userHandle);
+ mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle);
// Cleanup package manager settings
mPm.cleanUpUserLILPw(this, userHandle);
@@ -2183,16 +2184,6 @@
}
/**
- * Create new {@code /data/user/[id]} directory and sets default
- * permissions.
- */
- public static void prepareUserDirectory(Context context, String volumeUuid, int userId) {
- final StorageManager storage = context.getSystemService(StorageManager.class);
- final File userDir = Environment.getDataUserDirectory(volumeUuid, userId);
- storage.createNewUserDir(userId, userDir);
- }
-
- /**
* Enforce that serial number stored in user directory inode matches the
* given expected value. Gracefully sets the serial number if currently
* undefined.