add files_search_src()

required by loadkeys

policy/modules/kernel/files.if

@@ -5212,6 +5212,24 @@ interface(`files_usr_filetrans',`
 	filetrans_pattern($1, usr_t, $2, $3, $4)
 ')
 
+########################################
+## <summary>
+##	Search directories in /usr/src.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`files_search_src',`
+	gen_require(`
+		type src_t;
+	')
+
+	allow $1 src_t:dir search_dir_perms;
+')
+
 ########################################
 ## <summary>
 ##	Do not audit attempts to search /usr/src.