Remove 'dex2oat_exec' from untrusted_app
Remove the permission to execute dex2oat from apps targetSdkVersion>28.
This has been historically used by ART to compile secondary dex files
but that functionality has been removed in Q and the permission is
therefore not needed.
Some legacy apps do invoke dex2oat directly. Hence allow (with audit) for
targetSdkVersion<= 28.
Test: atest CtsSelinuxTargetSdk25TestCases
Test: atest CtsSelinuxTargetSdk27TestCases
Test: atest CtsSelinuxTargetSdkCurrentTestCases
Bug: 117606664
Change-Id: I2ea9cd56861fcf280cab388a251aa53e618160e5
diff --git a/private/untrusted_app_27.te b/private/untrusted_app_27.te
index 7b9060d..c828f64 100644
--- a/private/untrusted_app_27.te
+++ b/private/untrusted_app_27.te
@@ -30,3 +30,9 @@
# The ability to call exec() on files in the apps home directories
# for targetApi 26, 27, and 28.
allow untrusted_app_27 app_data_file:file execute_no_trans;
+
+# The ability to invoke dex2oat. Historically required by ART, now only
+# allowed for targetApi<=28 for compat reasons.
+allow untrusted_app_27 dex2oat_exec:file rx_file_perms;
+auditallow untrusted_app_27 dex2oat_exec:file rx_file_perms;
+