From: Paul Moore <paul-r2n+y4ga6xFZroRs9YW3xA@public.gmane.org>
To: Richard Guy Briggs <rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: simo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
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LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Eric Paris <eparis-FjpueFixGhCM4zKIHC2jIg@public.gmane.org>,
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Linux-Audit Mailing List
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Subject: Re: [RFC PATCH ghak32 V2 12/13] audit: NETFILTER_PKT: record each container ID associated with a netNS
Date: Thu, 19 Apr 2018 09:13:17 -0400 [thread overview]
Message-ID: <CAHC9VhSjvS81AZ55dtQVtuwJw1wSy2iJHyzERh9T6p0CR72ULA@mail.gmail.com> (raw)
In-Reply-To: <20180419124550.7uknp4oebvwoo67s-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
On Thu, Apr 19, 2018 at 8:45 AM, Richard Guy Briggs <rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> On 2018-04-18 22:10, Paul Moore wrote:
>> On Fri, Mar 16, 2018 at 5:00 AM, Richard Guy Briggs <rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>> > Add container ID auxiliary record(s) to NETFILTER_PKT event standalone
>> > records. Iterate through all potential container IDs associated with a
>> > network namespace.
>> >
>> > Signed-off-by: Richard Guy Briggs <rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>> > ---
>> > kernel/audit.c | 1 +
>> > kernel/auditsc.c | 2 ++
>> > net/netfilter/xt_AUDIT.c | 15 ++++++++++++++-
>> > 3 files changed, 17 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/kernel/audit.c b/kernel/audit.c
>> > index 08662b4..3c77e47 100644
>> > --- a/kernel/audit.c
>> > +++ b/kernel/audit.c
>> > @@ -2102,6 +2102,7 @@ int audit_log_container_info(struct audit_context *context,
>> > audit_log_end(ab);
>> > return 0;
>> > }
>> > +EXPORT_SYMBOL(audit_log_container_info);
>> >
>> > void audit_log_key(struct audit_buffer *ab, char *key)
>> > {
>> > diff --git a/kernel/auditsc.c b/kernel/auditsc.c
>> > index 208da962..af68d01 100644
>> > --- a/kernel/auditsc.c
>> > +++ b/kernel/auditsc.c
>> > @@ -975,6 +975,7 @@ struct audit_context *audit_alloc_local(void)
>> > context->in_syscall = 1;
>> > return context;
>> > }
>> > +EXPORT_SYMBOL(audit_alloc_local);
>> >
>> > inline void audit_free_context(struct audit_context *context)
>> > {
>> > @@ -989,6 +990,7 @@ inline void audit_free_context(struct audit_context *context)
>> > audit_proctitle_free(context);
>> > kfree(context);
>> > }
>> > +EXPORT_SYMBOL(audit_free_context);
>> >
>> > static int audit_log_pid_context(struct audit_context *context, pid_t pid,
>> > kuid_t auid, kuid_t uid, unsigned int sessionid,
>> > diff --git a/net/netfilter/xt_AUDIT.c b/net/netfilter/xt_AUDIT.c
>> > index c502419..edaa456 100644
>> > --- a/net/netfilter/xt_AUDIT.c
>> > +++ b/net/netfilter/xt_AUDIT.c
>> > @@ -71,10 +71,14 @@ static bool audit_ip6(struct audit_buffer *ab, struct sk_buff *skb)
>> > {
>> > struct audit_buffer *ab;
>> > int fam = -1;
>> > + struct audit_context *context = audit_alloc_local();
>> > + struct audit_containerid *cont;
>> > + int i = 0;
>> > + struct net *net;
>> >
>> > if (audit_enabled == 0)
>> > goto errout;
>>
>> Do I need to say it? I probably should ... the allocation should
>> happen after the audit_enabled check.
>
> Already fixed in V3 in my tree a couple of weeks ago...
... which you never posted, at least not anywhere I've seen. Which
effectively means I wasted a good chunk of time reviewing this code
late last night. Awesome.
> More timely review please?
More patience on your part?
>> > - ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_NETFILTER_PKT);
>> > + ab = audit_log_start(context, GFP_ATOMIC, AUDIT_NETFILTER_PKT);
>> > if (ab == NULL)
>> > goto errout;
>> >
>> > @@ -104,7 +108,16 @@ static bool audit_ip6(struct audit_buffer *ab, struct sk_buff *skb)
>> >
>> > audit_log_end(ab);
>> >
>> > + net = sock_net(NETLINK_CB(skb).sk);
>> > + list_for_each_entry(cont, &net->audit_containerid, list) {
>> > + char buf[14];
>> > +
>> > + sprintf(buf, "net%u", i++);
>> > + audit_log_container_info(context, buf, cont->id);
>> > + }
>>
>> It seems like this could (should?) be hidden inside an audit function,
>> e.g. audit_log_net_containers() or something like that.
>
> Perhaps... It was open-coded since at this point there are no other
> users. That'll make this tidier though.
If the code was all contained within a single subsystem them I would
generally agree that open coding is preferable, but since we are
crossing a subsystem boundary I think it would be preferable to
abstract away the details into a separate function.
This will probably also be necessary once you change to using the
audit_net/net_generic mechanism.
--
paul moore
www.paul-moore.com
next prev parent reply other threads:[~2018-04-19 13:13 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-16 9:00 [RFC PATCH ghak32 V2 00/13] audit: implement container id Richard Guy Briggs
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 01/13] audit: add " Richard Guy Briggs
2018-03-28 18:39 ` Jonathan Corbet
[not found] ` <20180328123912.49b11c98-T1hC0tSOHrs@public.gmane.org>
2018-03-29 9:01 ` Richard Guy Briggs
2018-03-29 13:03 ` Jonathan Corbet
2018-03-30 5:06 ` Richard Guy Briggs
2018-04-18 23:47 ` Paul Moore
2018-04-19 0:41 ` Casey Schaufler
[not found] ` <32d3e7a6-36f0-571a-bb91-67f746c7eafa-iSGtlc1asvQWG2LlvL+J4A@public.gmane.org>
2018-04-19 0:46 ` Paul Moore
2018-04-19 1:15 ` Casey Schaufler
2018-04-21 14:34 ` Richard Guy Briggs
2018-04-23 23:15 ` Paul Moore
2018-04-24 2:02 ` Richard Guy Briggs
2018-04-24 19:01 ` Paul Moore
2018-04-25 0:40 ` Richard Guy Briggs
2018-04-26 22:47 ` Paul Moore
2018-05-06 16:51 ` Richard Guy Briggs
[not found] ` <e284617ad667ad8f17958dd8babb87fe1b4d7205.1521179281.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-05-17 21:00 ` Steve Grubb
2018-05-17 21:56 ` Richard Guy Briggs
[not found] ` <20180517215600.dyswlkvqdtgjwr5y-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2018-05-18 13:56 ` Steve Grubb
2018-05-18 15:21 ` Richard Guy Briggs
2018-05-18 15:38 ` Steve Grubb
2018-06-01 21:04 ` Richard Guy Briggs
2018-06-04 16:09 ` Steve Grubb
2018-06-04 20:23 ` Richard Guy Briggs
2018-06-04 20:30 ` Richard Guy Briggs
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 03/13] audit: log container info of syscalls Richard Guy Briggs
2018-05-17 21:09 ` Steve Grubb
2018-05-17 21:41 ` Richard Guy Briggs
2018-05-21 19:19 ` Steve Grubb
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 04/13] audit: add containerid filtering Richard Guy Briggs
2018-04-19 0:24 ` Paul Moore
2018-04-19 12:17 ` Richard Guy Briggs
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 06/13] audit: add support for non-syscall auxiliary records Richard Guy Briggs
2018-04-19 0:39 ` Paul Moore
[not found] ` <CAHC9VhQbPbnrbxCD1fyTSxWgrXXXYnZw_=nbOhfMCO5Q5eSsWQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-04-20 1:23 ` Richard Guy Briggs
2018-04-20 16:21 ` Paul Moore
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 08/13] audit: add containerid support for tty_audit Richard Guy Briggs
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 09/13] audit: add containerid support for config/feature/user records Richard Guy Briggs
2018-04-19 1:27 ` Paul Moore
2018-04-19 12:31 ` Richard Guy Briggs
2018-04-19 12:59 ` Paul Moore
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 11/13] audit: add support for containerid to network namespaces Richard Guy Briggs
2018-04-19 1:46 ` Paul Moore
2018-04-20 20:02 ` Richard Guy Briggs
2018-04-20 20:22 ` Paul Moore
2018-04-20 20:42 ` Richard Guy Briggs
[not found] ` <20180420204225.iik2lgtj6gx2ep4w-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2018-04-21 12:10 ` Paul Moore
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 12/13] audit: NETFILTER_PKT: record each container ID associated with a netNS Richard Guy Briggs
2018-04-19 2:10 ` Paul Moore
2018-04-19 12:45 ` Richard Guy Briggs
[not found] ` <20180419124550.7uknp4oebvwoo67s-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2018-04-19 13:13 ` Paul Moore [this message]
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 13/13] debug audit: read container ID of a process Richard Guy Briggs
2018-05-21 19:16 ` Steve Grubb
2018-05-21 19:19 ` Eric W. Biederman
2018-05-21 20:06 ` Paul Moore
[not found] ` <CAHC9VhQruN88t-R9Qo3e4hwCZ58RAyrmEmH1nY4RR6NZaiBzGQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-05-22 17:35 ` Richard Guy Briggs
[not found] ` <20180522173541.slcdszumi7q6c4id-bcJWsdo4jJjeVoXN4CMphl7TgLCtbB0G@public.gmane.org>
2018-05-22 18:59 ` Paul Moore
[not found] ` <cover.1521179281.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 02/13] audit: check children and threading before allowing containerid Richard Guy Briggs
[not found] ` <995b77557010b2f9aed0e10435f7b8536df7a5db.1521179281.git.rgb-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-04-19 0:11 ` Paul Moore
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 05/13] audit: add containerid support for ptrace and signals Richard Guy Briggs
2018-04-19 0:32 ` Paul Moore
2018-04-20 1:03 ` Richard Guy Briggs
2018-04-20 16:13 ` Paul Moore
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 07/13] audit: add container aux record to watch/tree/mark Richard Guy Briggs
2018-04-19 0:42 ` Paul Moore
2018-04-19 12:24 ` Richard Guy Briggs
2018-03-16 9:00 ` [RFC PATCH ghak32 V2 10/13] audit: add containerid support for seccomp and anom_abend records Richard Guy Briggs
2018-04-19 1:31 ` Paul Moore
2018-04-20 0:42 ` Richard Guy Briggs
2018-04-20 16:11 ` Paul Moore
2018-05-30 13:20 ` [RFC PATCH ghak32 V2 00/13] audit: implement container id Steve Grubb
2018-05-30 17:33 ` Richard Guy Briggs
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