Add microdroid specific sepolicy
Microdroid will have a separate sepolicy, apart from the core policy.
This is the first step; For now it's a simple copy of system/sepolicy.
For the future work, it will be stripped.
Bug: 189165759
Test: boot microdroid and see selinux enforced
Change-Id: I2fee39f7231560b49c93bd5e8d0feeffada40938
diff --git a/microdroid/sepolicy/system/private/dex2oat.te b/microdroid/sepolicy/system/private/dex2oat.te
new file mode 100644
index 0000000..28d8b9a
--- /dev/null
+++ b/microdroid/sepolicy/system/private/dex2oat.te
@@ -0,0 +1,109 @@
+# dex2oat
+type dex2oat, domain, coredomain;
+type dex2oat_exec, system_file_type, exec_type, file_type;
+
+userfaultfd_use(dex2oat)
+
+r_dir_file(dex2oat, apk_data_file)
+# Access to /vendor/app
+r_dir_file(dex2oat, vendor_app_file)
+# Access /vendor/framework
+allow dex2oat vendor_framework_file:dir { getattr search };
+allow dex2oat vendor_framework_file:file { getattr open read map };
+
+allow dex2oat tmpfs:file { read getattr map };
+
+r_dir_file(dex2oat, dalvikcache_data_file)
+allow dex2oat dalvikcache_data_file:file write;
+allow dex2oat installd:fd use;
+
+# Acquire advisory lock on /system/framework/arm/*
+allow dex2oat system_file:file lock;
+allow dex2oat postinstall_file:file lock;
+
+# Read already open asec_apk_file file descriptors passed by installd.
+# Also allow reading unlabeled files, to allow for upgrading forward
+# locked APKs.
+allow dex2oat asec_apk_file:file { read map };
+allow dex2oat unlabeled:file { read map };
+allow dex2oat oemfs:file { read map };
+allow dex2oat apk_tmp_file:dir search;
+allow dex2oat apk_tmp_file:file r_file_perms;
+allow dex2oat user_profile_data_file:file { getattr read lock map };
+
+# Allow dex2oat to compile app's secondary dex files which were reported back to
+# the framework.
+allow dex2oat { privapp_data_file app_data_file }:file { getattr read write lock map };
+
+# Allow dex2oat to find files and directories under /data/misc/apexdata/com.android.runtime.
+allow dex2oat apex_module_data_file:dir search;
+
+# Allow dex2oat to use file descriptors passed from odrefresh.
+allow dex2oat odrefresh:fd use;
+
+# Allow dex2oat to use devpts and file descriptors passed from odsign
+allow dex2oat odsign_devpts:chr_file { read write };
+allow dex2oat odsign:fd use;
+
+# Allow dex2oat to write to file descriptors from odrefresh for files
+# in the staging area.
+allow dex2oat apex_art_staging_data_file:dir r_dir_perms;
+allow dex2oat apex_art_staging_data_file:file { getattr map read write unlink };
+
+# Allow dex2oat to read artifacts from odrefresh.
+allow dex2oat apex_art_data_file:dir r_dir_perms;
+allow dex2oat apex_art_data_file:file r_file_perms;
+
+# Allow dex2oat to read runtime native flag properties.
+get_prop(dex2oat, device_config_runtime_native_prop)
+get_prop(dex2oat, device_config_runtime_native_boot_prop)
+
+# Allow dex2oat to read /apex/apex-info-list.xml
+allow dex2oat apex_info_file:file r_file_perms;
+
+##################
+# A/B OTA Dexopt #
+##################
+
+# Allow dex2oat to use file descriptors from otapreopt.
+allow dex2oat postinstall_dexopt:fd use;
+
+# Allow dex2oat to read files under /postinstall (e.g. APKs under /system, /system/bin/linker).
+allow dex2oat postinstall_file:dir r_dir_perms;
+allow dex2oat postinstall_file:filesystem getattr;
+allow dex2oat postinstall_file:lnk_file { getattr read };
+allow dex2oat postinstall_file:file read;
+# Allow dex2oat to use libraries under /postinstall/system (e.g. /system/lib/libc.so).
+# TODO(b/120266448): Remove when Bionic libraries are part of the Runtime APEX.
+allow dex2oat postinstall_file:file { execute getattr open };
+
+# Allow dex2oat access to /postinstall/apex.
+allow dex2oat postinstall_apex_mnt_dir:dir { getattr search };
+
+# Allow dex2oat access to files in /data/ota.
+allow dex2oat ota_data_file:dir ra_dir_perms;
+allow dex2oat ota_data_file:file r_file_perms;
+
+# Create and read symlinks in /data/ota/dalvik-cache. This is required for PIC mode boot images,
+# where the oat file is symlinked to the original file in /system.
+allow dex2oat ota_data_file:lnk_file { create read };
+
+# It would be nice to tie this down, but currently, because of how images are written, we can't
+# pass file descriptors for the preopted boot image to dex2oat. So dex2oat needs to be able to
+# create them itself (and make them world-readable).
+allow dex2oat ota_data_file:file { create w_file_perms setattr };
+
+###############
+# APEX Update #
+###############
+
+# /dev/zero is inherited.
+allow dex2oat apexd:fd use;
+
+# Allow dex2oat to use file descriptors from preinstall.
+
+##############
+# Neverallow #
+##############
+
+neverallow dex2oat { privapp_data_file app_data_file }:notdevfile_class_set open;