domain: keep others out of system app sandbox
Do not allow other domains to create or unlink files under
the system app sandbox.
Change-Id: I7c3037210c6849c3b0fc205fa71fa5ed4dcac1c2
Signed-off-by: William Roberts <william.c.roberts@intel.com>
diff --git a/domain.te b/domain.te
index 549a0b9..46e0ad2 100644
--- a/domain.te
+++ b/domain.te
@@ -419,6 +419,14 @@
# to installd
neverallow installd system_data_file:file ~{ r_file_perms relabelfrom unlink };
+# respect system_app sandboxes
+neverallow {
+ domain
+ -system_app # its own sandbox
+ -system_server #populate com.android.providers.settings/databases/settings.db.
+ -installd # creation of app sandbox
+} system_app_data_file:dir_file_class_set { create unlink };
+
#
# Only these domains should transition to shell domain. This domain is
# permissible for the "shell user". If you need a process to exec a shell