Re: [PATCH 2/6] secmark: make secmark object handling generic

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On 24/09/10 22:45, Eric Paris wrote:
> Right now secmark has lots of direct selinux calls.  Use all LSM calls and
> remove all SELinux specific knowledge.  The only SELinux specific knowledge
> we leave is the mode.  The only point is to make sure that other LSMs at
> least test this generic code before they assume it works.  (They may also
> have to make changes if they do not represent labels as strings)
> 
> Signed-off-by: Eric Paris <eparis@xxxxxxxxxx>
> ---
> 
>  include/linux/netfilter/xt_SECMARK.h |   14 ++------
>  include/linux/security.h             |   25 +++++++++++++
>  include/linux/selinux.h              |   63 ----------------------------------
>  net/netfilter/xt_CT.c                |    1 -
>  net/netfilter/xt_SECMARK.c           |   57 +++++++++++++++----------------
>  security/capability.c                |   17 +++++++++
>  security/security.c                  |   18 ++++++++++
>  security/selinux/exports.c           |   49 --------------------------
>  security/selinux/hooks.c             |   24 +++++++++++++
>  security/selinux/include/security.h  |    1 +
>  10 files changed, 116 insertions(+), 153 deletions(-)
> 
> diff --git a/include/linux/netfilter/xt_SECMARK.h b/include/linux/netfilter/xt_SECMARK.h
> index 6fcd344..b8d55c4 100644
> --- a/include/linux/netfilter/xt_SECMARK.h
> +++ b/include/linux/netfilter/xt_SECMARK.h
> @@ -10,19 +10,13 @@
>   * 'mode' refers to the specific security subsystem which the
>   * packets are being marked for.
>   */
> -#define SECMARK_MODE_SEL	0x01		/* SELinux */
> -#define SECMARK_SELCTX_MAX	256
> -
> -struct xt_secmark_target_selinux_info {
> -	__u32 selsid;
> -	char selctx[SECMARK_SELCTX_MAX];
> -};
> +#define SECMARK_MODE_SELINUX	0x01		/* SELinux */
> +#define SECMARK_SECCTX_MAX	256

The SECMARK_MODE_SEL is exposed to user-space, even if we have a copy of
it in the internal iptables tree, I'm not sure if it's a good policy to
change it.
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