Handle multi-user mountObb() requests.
Since emulated external storage paths differ based on execution
context, carefully fix up paths for various use-cases:
1. When sending paths to DefaultContainerService, always scope
OBB paths as belonging to USER_OWNER.
2. When sending paths to vold, always build emulated storage paths
visible to root.
3. Always use the original untouched path when talking with apps.
Mount OBB containers using shared app GID, so that an app can read
the mount point across users.
Handle legacy paths like "/sdcard" by resolving the canonical path
before sending to MountService. Move tests to servicestests, and
add tests for new path generation logic.
Bug: 7212801
Change-Id: I078c52879cd08d9c8a52cc8c83ac7ced1e8035e7
diff --git a/core/java/android/os/Environment.java b/core/java/android/os/Environment.java
index 5c4c036..3315566 100644
--- a/core/java/android/os/Environment.java
+++ b/core/java/android/os/Environment.java
@@ -31,6 +31,7 @@
private static final String TAG = "Environment";
private static final String ENV_EXTERNAL_STORAGE = "EXTERNAL_STORAGE";
+ private static final String ENV_EMULATED_STORAGE_SOURCE = "EMULATED_STORAGE_SOURCE";
private static final String ENV_EMULATED_STORAGE_TARGET = "EMULATED_STORAGE_TARGET";
private static final String ENV_MEDIA_STORAGE = "MEDIA_STORAGE";
@@ -134,6 +135,10 @@
return mExternalStorage;
}
+ public File getExternalStorageObbDirectory() {
+ return mExternalStorageAndroidObb;
+ }
+
public File getExternalStoragePublicDirectory(String type) {
return new File(mExternalStorage, type);
}
@@ -302,6 +307,23 @@
return new File(System.getenv(ENV_EXTERNAL_STORAGE));
}
+ /** {@hide} */
+ public static File getLegacyExternalStorageObbDirectory() {
+ return buildPath(getLegacyExternalStorageDirectory(), DIRECTORY_ANDROID, "obb");
+ }
+
+ /** {@hide} */
+ public static File getEmulatedStorageSource(int userId) {
+ // /mnt/shell/emulated/0
+ return new File(System.getenv(ENV_EMULATED_STORAGE_SOURCE), String.valueOf(userId));
+ }
+
+ /** {@hide} */
+ public static File getEmulatedStorageObbSource() {
+ // /mnt/shell/emulated/obb
+ return new File(System.getenv(ENV_EMULATED_STORAGE_SOURCE), "obb");
+ }
+
/**
* Standard directory in which to place any audio files that should be
* in the regular list of music for the user.