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Re: [Libguestfs] [PATCH] sysprep: remove the cache of package manager



On Tue, Apr 24, 2012 at 03:23:48PM +0800, Wanlong Gao wrote:
> Remove the cache of package manager like yum and apt.
> 
> Signed-off-by: Wanlong Gao <gaowanlong cn fujitsu com>
> ---
>  sysprep/Makefile.am                                |    2 +
>  sysprep/sysprep_operation_package_manager_cache.ml |   49 ++++++++++++++++++++
>  2 files changed, 51 insertions(+)
>  create mode 100644 sysprep/sysprep_operation_package_manager_cache.ml
> 
> diff --git a/sysprep/Makefile.am b/sysprep/Makefile.am
> index e4b7f7b..78b1fa1 100644
> --- a/sysprep/Makefile.am
> +++ b/sysprep/Makefile.am
> @@ -42,6 +42,7 @@ SOURCES = \
>  	sysprep_operation_logfiles.ml \
>  	sysprep_operation_mail_spool.ml \
>  	sysprep_operation_net_hwaddr.ml \
> +	sysprep_operation_package_manager_cache.ml \
>  	sysprep_operation_random_seed.ml \
>  	sysprep_operation_rhn_systemid.ml \
>  	sysprep_operation_script.ml \
> @@ -69,6 +70,7 @@ OBJECTS = \
>  	sysprep_operation_logfiles.cmx \
>  	sysprep_operation_mail_spool.cmx \
>  	sysprep_operation_net_hwaddr.cmx \
> +	sysprep_operation_package_manager_cache.ml \
>  	sysprep_operation_random_seed.cmx \
>  	sysprep_operation_rhn_systemid.cmx \
>  	sysprep_operation_script.cmx \
> diff --git a/sysprep/sysprep_operation_package_manager_cache.ml b/sysprep/sysprep_operation_package_manager_cache.ml
> new file mode 100644
> index 0000000..f70f310
> --- /dev/null
> +++ b/sysprep/sysprep_operation_package_manager_cache.ml
> @@ -0,0 +1,49 @@
> +(* virt-sysprep
> + * Copyright (C) 2012 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
> +
> +module G = Guestfs
> +
> +let package_manager_cache_perform g root =
> +  let packager = g#inspect_get_package_management root in
> +    match packager with
> +    | "yum" ->
> +      let cache = g#glob_expand "/var/cache/yum/*" in
> +      Array.iter (
> +        fun dir ->
> +          g#rm_rf dir
> +      ) cache; []
> +    | "apt" ->
> +      let cache = g#glob_expand "/var/cache/apt/archives/*" in
> +      Array.iter (
> +        fun dir ->
> +          g#rm_rf dir
> +      ) cache; []
> +    | _ -> (); []
> +
> +let package_manager_cache_op = {
> +  name = "package-manager-cache";
> +  enabled_by_default = true;
> +  heading = "Remove the cache of package manager";
> +  pod_description = None;
> +  extra_args = [];
> +  perform = package_manager_cache_perform;
> +}
> +
> +let () = register_operation package_manager_cache_op
> -- 
> 1.7.10

ACK.  I'll push it shortly.

Thanks,

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://et.redhat.com/~rjones/virt-df/


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