Storaged permissions for task I/O

Allow storaged to read /proc/[pid]/io
Grant binder access to storaged
Add storaged service
Grant storaged_exec access to dumpstate
Grant storaged binder_call to dumpstate

Bug: 32221677

Change-Id: Iecc9dba266c5566817a99ac6251eb943a0bac630
diff --git a/private/storaged.te b/private/storaged.te
index e9a959c..bf5c242 100644
--- a/private/storaged.te
+++ b/private/storaged.te
@@ -1,5 +1,5 @@
 # storaged daemon
-type storaged, domain;
+type storaged, domain, mlstrustedsubject;
 type storaged_exec, exec_type, file_type;
 
 init_daemon_domain(storaged)
@@ -11,9 +11,22 @@
 allow storaged proc:dir r_dir_perms;
 r_dir_file(storaged, sysfs_type)
 r_dir_file(storaged, proc_net)
+r_dir_file(storaged, domain)
 
-# Read access to debugfs
-allow storaged debugfs_mmc:dir search;
-allow storaged debugfs_mmc:file r_file_perms;
+allow storaged self:capability { setgid setuid sys_nice sys_ptrace };
 
+userdebug_or_eng(`
+  # Read access to debugfs
+  allow storaged debugfs_mmc:dir search;
+  allow storaged debugfs_mmc:file r_file_perms;
+')
 
+# Binder permissions
+allow storaged storaged_service:service_manager add;
+binder_use(storaged)
+binder_call(storaged, system_server)
+
+###
+### neverallow
+###
+neverallow storaged domain:process ptrace;