Permissions for odrefresh and /data/misc/apexdata/com.android.art
odrefresh is the process responsible for checking and creating ART
compilation artifacts that live in the ART APEX data
directory (/data/misc/apexdata/com.android.art).
There are two types of change here:
1) enabling odrefresh to run dex2oat and write updated boot class path
and system server AOT artifacts into the ART APEX data directory.
2) enabling the zygote and assorted diagnostic tools to use the
updated AOT artifacts.
odrefresh uses two file contexts: apex_art_data_file and
apex_art_staging_data_file. When odrefresh invokes dex2oat, the
generated files have the apex_art_staging_data_file label (which allows
writing). odrefresh then moves these files from the staging area to
their installation area and gives them the apex_art_data_file label.
Bug: 160683548
Test: adb root && adb shell /apex/com.android.art/bin/odrefresh
Change-Id: I9fa290e0c9c1b7b82be4dacb9f2f8cb8c11e4895
diff --git a/private/vold_prepare_subdirs.te b/private/vold_prepare_subdirs.te
index 9bea43c..b4e95b8 100644
--- a/private/vold_prepare_subdirs.te
+++ b/private/vold_prepare_subdirs.te
@@ -16,6 +16,7 @@
vendor_data_file
}:dir { open read write add_name remove_name rmdir relabelfrom };
allow vold_prepare_subdirs {
+ apex_art_data_file
apex_module_data_file
apex_permission_data_file
apex_rollback_data_file
@@ -30,6 +31,8 @@
vold_data_file
}:dir { create_dir_perms relabelto };
allow vold_prepare_subdirs {
+ apex_art_data_file
+ apex_art_staging_data_file
apex_module_data_file
apex_permission_data_file
apex_rollback_data_file