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SubjectRe: [RFC PATCH ghak90 (was ghak32) V3 03/10] audit: add containerid support for ptrace and signals
On Wed, Jun 6, 2018 at 1:01 PM Richard Guy Briggs <rgb@redhat.com> wrote:
> Add audit container identifier support to ptrace and signals. In
> particular, the "op" field provides a way to label the auxiliary record
> to which it is associated.
>
> Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
> ---
> include/linux/audit.h | 11 +++++------
> kernel/audit.c | 13 +++++++------
> kernel/audit.h | 2 ++
> kernel/auditsc.c | 21 ++++++++++++++++-----
> 4 files changed, 30 insertions(+), 17 deletions(-)

...

> diff --git a/kernel/audit.c b/kernel/audit.c
> index 5e150c6..ba304a8 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -142,6 +142,7 @@ struct audit_net {
> kuid_t audit_sig_uid = INVALID_UID;
> pid_t audit_sig_pid = -1;
> u32 audit_sig_sid = 0;
> +u64 audit_sig_cid = AUDIT_CID_UNSET;
>
> /* Records can be lost in several ways:
> 0) [suppressed in audit_alloc]
> @@ -1437,6 +1438,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
> memcpy(sig_data->ctx, ctx, len);
> security_release_secctx(ctx, len);
> }
> + sig_data->cid = audit_sig_cid;
> audit_send_reply(skb, seq, AUDIT_SIGNAL_INFO, 0, 0,
> sig_data, sizeof(*sig_data) + len);
> kfree(sig_data);
> @@ -2050,23 +2052,22 @@ void audit_log_session_info(struct audit_buffer *ab)
>
> /*
> * audit_log_contid - report container info
> - * @tsk: task to be recorded
> * @context: task or local context for record
> * @op: contid string description
> + * @contid: container ID to report
> */
> -int audit_log_contid(struct task_struct *tsk,
> - struct audit_context *context, char *op)
> +int audit_log_contid(struct audit_context *context,
> + char *op, u64 contid)
> {
> struct audit_buffer *ab;
>
> - if (!audit_contid_set(tsk))
> + if (!cid_valid(contid))
> return 0;
> /* Generate AUDIT_CONTAINER record with container ID */
> ab = audit_log_start(context, GFP_KERNEL, AUDIT_CONTAINER);
> if (!ab)
> return -ENOMEM;
> - audit_log_format(ab, "op=%s contid=%llu",
> - op, audit_get_contid(tsk));
> + audit_log_format(ab, "op=%s contid=%llu", op, contid);
> audit_log_end(ab);
> return 0;
> }

You might as well just make these changes to audit_log_contid() in
patch 2 when you first define audit_log_contid().

--
paul moore
www.paul-moore.com

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