Re: [PATCH v2] selinux: add netlink nlmsg_type audit message

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On Wed, Dec 4, 2024 at 8:21 PM Thiébaud Weksteen <tweek@xxxxxxxxxx> wrote:
>
> Add a new audit message type to capture nlmsg-related information. This
> is similar to LSM_AUDIT_DATA_IOCTL_OP which was added for the other
> SELinux extended permission (ioctl).
>
> Adding a new type is preferred to adding to the existing
> lsm_network_audit structure which contains irrelevant information for
> the netlink sockets (i.e., dport, sport).
>
> Signed-off-by: Thiébaud Weksteen <tweek@xxxxxxxxxx>
> ---
> v2: Change printed field name from nlmsg_type to nlnk-msgtype
>
>  include/linux/lsm_audit.h | 2 ++
>  security/lsm_audit.c      | 3 +++
>  security/selinux/hooks.c  | 4 ++--
>  3 files changed, 7 insertions(+), 2 deletions(-)

...

> diff --git a/security/lsm_audit.c b/security/lsm_audit.c
> index 9a8352972086..70444230e56f 100644
> --- a/security/lsm_audit.c
> +++ b/security/lsm_audit.c
> @@ -425,6 +425,9 @@ static void dump_common_audit_data(struct audit_buffer *ab,
>         case LSM_AUDIT_DATA_ANONINODE:
>                 audit_log_format(ab, " anonclass=%s", a->u.anonclass);
>                 break;
> +       case LSM_AUDIT_DATA_NLMSGTYPE:
> +               audit_log_format(ab, " nlnk-msgtype=%hu", a->u.nlmsg_type);
> +               break;

See my follow-up reply to your v1 patch.  Assuming no objections, I
can change this to "nl-msgtype" when I merge the patch; is that okay
with you?

>         } /* switch (a->type) */
>  }

-- 
paul-moore.com





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