Add fusefs_type for FUSE filesystems
Any FUSE filesystem will receive the 'fuse' type when mounted. It is
possible to change this behaviour by specifying the "context=" or
"fscontext=" option in mount().
Because 'fuse' has historically been used only for the emulated storage,
it also received the 'sdcard_type' attribute. Replace the 'sdcard_type'
attribute from 'fuse' with the new 'fusefs_type'. This attribute can be
attached on derived types (such as app_fusefs).
This change:
- Remove the neverallow restriction on this new type. This means any
custom FUSE implementation can be mounted/unmounted (if the correct
allow rule is added). See domain.te.
- Change the attribute of 'fuse' from 'sdcard_type' to 'fusefs_type'.
See file.te.
- Modify all references to 'sdcard_type' to explicitly include 'fuse'
for compatibility reason.
Bug: 177481425
Bug: 190804537
Test: Build and boot aosp_cf_x86_64_phone-userdebug
Change-Id: Id4e410a049f72647accd4c3cf43eaa55e94c318f
diff --git a/private/surfaceflinger.te b/private/surfaceflinger.te
index 7a92bd4..8203724 100644
--- a/private/surfaceflinger.te
+++ b/private/surfaceflinger.te
@@ -142,7 +142,7 @@
# Do not allow accessing SDcard files as unsafe ejection could
# cause the kernel to kill the process.
-neverallow surfaceflinger sdcard_type:file rw_file_perms;
+neverallow surfaceflinger { sdcard_type fuse }:file rw_file_perms;
# b/68864350
dontaudit surfaceflinger unlabeled:dir search;