diff --git a/classes/phosphor-mapper.bbclass b/classes/phosphor-mapper.bbclass
new file mode 100644
index 0000000..26f369b
--- /dev/null
+++ b/classes/phosphor-mapper.bbclass
@@ -0,0 +1,52 @@
+# Common code for recipes that modify the phosphor-mapper
+# configuration.
+#
+# Typically it is not desired to monitor all dbus traffic
+# on a system and as such, the phosphor-mapper has command
+# line options to control what path namespaces and dbus
+# interfaces it will keep track of.
+#
+# The Phosphor layer by default configures the mapper to
+# watch xyz.openbmc_project interfaces and paths only.  This
+# configuration file is intended to be inherited by
+# native recipes in other layers that wish to add namespaces
+# or interfaces to the mapper watchlist.
+
+# Add path namespaces to be monitored:
+# PHOSPHOR_MAPPER_NAMESPACE_append = " /foo/bar"
+
+# Add interfaces to be monitored:
+# PHOSPHOR_MAPPER_INTERFACE_append = " foo.bar"
+
+# Blacklist paths from being monitored:
+# PHOSPHOR_MAPPER_NAMESPACE_BLACKLIST_append = " /foo/bar/baz"
+
+# Blacklist interfaces from being monitored:
+# PHOSPHOR_MAPPER_INTERFACE_BLACKLIST_append = " foo.bar.baz"
+
+inherit phosphor-mapperdir
+
+python phosphor_mapper_do_postinst() {
+    def process_var(d, var, dir):
+        for p in listvar_to_list(d, var):
+            parent = d.getVar('D', True) + d.getVar(dir, True)
+            if not os.path.exists(parent):
+                os.makedirs(parent)
+            path = os.path.join(
+                parent,
+                '-'.join(p[1:].split(os.sep)))
+            with open(path, 'w+') as fd:
+                pass
+
+    process_var(d, 'PHOSPHOR_MAPPER_NAMESPACE', 'namespace_dir')
+    process_var(d, 'PHOSPHOR_MAPPER_INTERFACE', 'interface_dir')
+    process_var(d, 'PHOSPHOR_MAPPER_NAMESPACE_BLACKLIST', 'blacklist_dir')
+    process_var(
+        d, 'PHOSPHOR_MAPPER_INTERFACE_BLACKLIST', 'interfaceblacklist_dir')
+}
+
+do_install[vardeps] += "PHOSPHOR_MAPPER_NAMESPACE"
+do_install[vardeps] += "PHOSPHOR_MAPPER_INTERFACE"
+do_install[vardeps] += "PHOSPHOR_MAPPER_NAMESPACE_BLACKLIST"
+do_install[vardeps] += "PHOSPHOR_MAPPER_INTERFACE_BLACKLIST"
+do_install[postfuncs] += "phosphor_mapper_do_postinst"