From Debian package 0.0.20080702-16
In Russell's 2010-07-08 patch

Disabled in master because 134_dbus_proc_cmdline does the same thing

Allow system_dbusd_t to read /proc/X/cmdline so it knows the client name

Index: policy/modules/services/dbus.if
===================================================================
--- policy/modules/services/dbus.if.orig
+++ policy/modules/services/dbus.if
@@ -194,6 +194,8 @@
 	files_search_pids($1)
 	stream_connect_pattern($1, system_dbusd_var_run_t, system_dbusd_var_run_t, system_dbusd_t)
 	dbus_read_config($1)
+	allow system_dbusd_t $1:dir search;
+	allow system_dbusd_t $1:file read_file_perms;
 ')
 
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