Minimize public policy
Ideally, public should only contain APIs (types / attributes) for
vendor. The other statements like allow/neverallow/typeattributes are
regarded as implementation detail for platform and should be in private.
Bug: 232023812
Test: m selinux_policy
Test: diff <(git diff --staged | grep "^-" | cut -b2- | sort) \
<(git diff --staged | grep "^+" | cut -b2- | sort)
Test: remove comments on plat_sepolicy.cil, replace base_typeattr_*
to base_typeattr and then compare old and new plat_sepolicy.cil
Change-Id: I5e7d2da4465ab0216de6bacdf03077d37f6ffe12
diff --git a/private/drmserver.te b/private/drmserver.te
index 8449c3e..dfbf3b8 100644
--- a/private/drmserver.te
+++ b/private/drmserver.te
@@ -7,3 +7,63 @@
typeattribute drmserver_socket coredomain_socket;
get_prop(drmserver, drm_service_config_prop)
+
+typeattribute drmserver mlstrustedsubject;
+
+net_domain(drmserver)
+
+# Perform Binder IPC to system server.
+binder_use(drmserver)
+binder_call(drmserver, system_server)
+binder_call(drmserver, appdomain)
+binder_call(drmserver, mediametrics)
+binder_service(drmserver)
+# Inherit or receive open files from system_server.
+allow drmserver system_server:fd use;
+
+# Perform Binder IPC to mediaserver
+binder_call(drmserver, mediaserver)
+
+allow drmserver { sdcard_type fuse }:dir search;
+allow drmserver drm_data_file:dir create_dir_perms;
+allow drmserver drm_data_file:file create_file_perms;
+allow drmserver { app_data_file privapp_data_file }:file { read write getattr map };
+allow drmserver { sdcard_type fuse }:file { read write getattr map };
+r_dir_file(drmserver, efs_file)
+
+# /data/app/tlcd_sock socket file.
+# Clearly, /data/app is the most logical place to create a socket. Not.
+allow drmserver apk_data_file:dir rw_dir_perms;
+auditallow drmserver apk_data_file:dir { add_name write };
+allow drmserver drmserver_socket:sock_file create_file_perms;
+auditallow drmserver drmserver_socket:sock_file create;
+# Delete old socket file if present.
+allow drmserver apk_data_file:sock_file unlink;
+
+# After taking a video, drmserver looks at the video file.
+r_dir_file(drmserver, media_rw_data_file)
+
+# Read resources from open apk files passed over Binder.
+allow drmserver apk_data_file:file { read getattr map };
+allow drmserver asec_apk_file:file { read getattr map };
+allow drmserver ringtone_file:file { read getattr map };
+
+# Read /data/data/com.android.providers.telephony files passed over Binder.
+allow drmserver radio_data_file:file { read getattr map };
+
+# /oem access
+allow drmserver oemfs:dir search;
+allow drmserver oemfs:file r_file_perms;
+
+# overlay package access
+allow drmserver vendor_overlay_file:file { read map };
+
+add_service(drmserver, drmserver_service)
+allow drmserver permission_service:service_manager find;
+allow drmserver mediametrics_service:service_manager find;
+
+selinux_check_access(drmserver)
+
+r_dir_file(drmserver, cgroup)
+r_dir_file(drmserver, cgroup_v2)
+r_dir_file(drmserver, system_file)