diff --git a/cmds/servicemanager/Access.cpp b/cmds/servicemanager/Access.cpp
index 711038c..8098724 100644
--- a/cmds/servicemanager/Access.cpp
+++ b/cmds/servicemanager/Access.cpp
@@ -22,6 +22,8 @@
 #include <selinux/android.h>
 #include <selinux/avc.h>
 
+#include <sstream>
+
 namespace android {
 
 #ifdef VENDORSERVICEMANAGER
@@ -80,6 +82,12 @@
 }
 #endif
 
+std::string Access::CallingContext::toDebugString() const {
+    std::stringstream ss;
+    ss << "Caller(pid=" << debugPid << ",uid=" << uid << ",sid=" << sid << ")";
+    return ss.str();
+}
+
 Access::Access() {
 #ifdef __ANDROID__
     union selinux_callback cb;