Allow sysadm to map all non auth files

The idea and code are from perfinion. I support it, but we should
probably discuss it.

policy/modules/kernel/files.if

@@ -1472,6 +1472,26 @@ interface(`files_manage_non_auth_files',`
 	files_manage_kernel_modules($1)
 ')
 
+########################################
+## <summary>
+##	Mmap non-authentication related
+##	files.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+## <rolecap/>
+#
+interface(`files_map_non_auth_files',`
+	gen_require(`
+		attribute non_auth_file_type;
+	')
+
+	allow $1 non_auth_file_type:file map;
+')
+
 ########################################
 ## <summary>
 ##	Relabel all non-authentication related

policy/modules/system/userdomain.if

@@ -1233,6 +1233,7 @@ template(`userdom_admin_user_template',`
 	auth_getattr_shadow($1_t)
 	# Manage almost all files
 	files_manage_non_auth_files($1_t)
+	files_map_non_auth_files($1_t)
 	# Relabel almost all files
 	files_relabel_non_auth_files($1_t)