sysprep: remove tmp files

This removes tmp files under /tmp and /var/tmp.

Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>

sysprep/Makefile.am

@@ -65,6 +65,7 @@ operations = \
 	ssh_hostkeys \
 	ssh_userdir \
 	sssd_db_log \
+	tmp_files \
 	udev_persistent_net \
 	user_account \
 	utmp yum_uuid

sysprep/sysprep_operation_tmp_files.ml

@@ -0,0 +1,52 @@
+(* virt-sysprep
+ * Copyright (C) 2013 Fujitsu Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+open Sysprep_operation
+open Common_gettext.Gettext
+
+module G = Guestfs
+
+let tmp_files_perform g root =
+  let typ = g#inspect_get_type root in
+  if typ <> "windows" then (
+    let paths = [ "/tmp/*";
+                  "/var/tmp/*"; ] in
+    List.iter (
+      fun path ->
+        let files = g#glob_expand path in
+        Array.iter (
+          fun file ->
+            g#rm_rf file;
+        ) files;
+    ) paths;
+
+    []
+  )
+  else []
+
+let op = {
+  defaults with
+    name = "tmp-files";
+    enabled_by_default = true;
+    heading = s_"Remove temporary files";
+    pod_description = Some (s_"\
+This removes temporary files under C</tmp> and C</var/tmp>.");
+    perform_on_filesystems = Some tmp_files_perform;
+}
+
+let () = register_operation op