From: Richard Guy Briggs <rgb@redhat.com>
To: containers@lists.linux-foundation.org, linux-api@vger.kernel.org,
Linux-Audit Mailing List <linux-audit@redhat.com>,
linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
netdev@vger.kernel.org, netfilter-devel@vger.kernel.org
Cc: Paul Moore <paul@paul-moore.com>,
sgrubb@redhat.com, omosnace@redhat.com, dhowells@redhat.com,
simo@redhat.com, eparis@parisplace.org, serge@hallyn.com,
ebiederm@xmission.com, nhorman@tuxdriver.com, dwalsh@redhat.com,
mpatel@redhat.com, Richard Guy Briggs <rgb@redhat.com>
Subject: [PATCH ghak90 V7 16/21] audit: add support for contid set/get by netlink
Date: Wed, 18 Sep 2019 21:22:33 -0400 [thread overview]
Message-ID: <ea4e8352fd1671f91d1b015a15abee785ea17136.1568834525.git.rgb@redhat.com> (raw)
In-Reply-To: <cover.1568834524.git.rgb@redhat.com>
In-Reply-To: <cover.1568834524.git.rgb@redhat.com>
Add the ability to get and set the audit container identifier using an
audit netlink message using message types AUDIT_SET_CONTID 1023 and
AUDIT_GET_CONTID 1022 in addition to using the proc filesystem. The
message format includes the data structure:
struct audit_contid_status {
pid_t pid;
u64 id;
};
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
---
include/uapi/linux/audit.h | 2 ++
kernel/audit.c | 40 ++++++++++++++++++++++++++++++++++++++++
kernel/audit.h | 5 +++++
3 files changed, 47 insertions(+)
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index f34108759e8f..e26729fc9943 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -73,6 +73,8 @@
#define AUDIT_GET_FEATURE 1019 /* Get which features are enabled */
#define AUDIT_CONTAINER_OP 1020 /* Define the container id and info */
#define AUDIT_SIGNAL_INFO2 1021 /* Get info auditd signal sender */
+#define AUDIT_GET_CONTID 1022 /* Get contid of a task */
+#define AUDIT_SET_CONTID 1023 /* Set contid of a task */
#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
#define AUDIT_USER_AVC 1107 /* We filter this differently */
diff --git a/kernel/audit.c b/kernel/audit.c
index 4fe7678304dd..df92de20ed73 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1216,6 +1216,8 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
case AUDIT_TTY_SET:
case AUDIT_TRIM:
case AUDIT_MAKE_EQUIV:
+ case AUDIT_GET_CONTID:
+ case AUDIT_SET_CONTID:
/* Only support auditd and auditctl in initial pid namespace
* for now. */
if (task_active_pid_ns(current) != &init_pid_ns)
@@ -1273,6 +1275,23 @@ static int audit_get_feature(struct sk_buff *skb)
return 0;
}
+static int audit_get_contid_status(struct sk_buff *skb)
+{
+ struct nlmsghdr *nlh = nlmsg_hdr(skb);
+ u32 seq = nlh->nlmsg_seq;
+ void *data = nlmsg_data(nlh);
+ struct audit_contid_status cs;
+
+ cs.pid = ((struct audit_contid_status *)data)->pid;
+ if (!cs.pid)
+ cs.pid = task_tgid_nr(current);
+ rcu_read_lock();
+ cs.id = audit_get_contid(find_task_by_vpid(cs.pid));
+ rcu_read_unlock();
+ audit_send_reply(skb, seq, AUDIT_GET_CONTID, 0, 0, &cs, sizeof(cs));
+ return 0;
+}
+
static void audit_log_feature_change(int which, u32 old_feature, u32 new_feature,
u32 old_lock, u32 new_lock, int res)
{
@@ -1700,6 +1719,27 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
audit_log_end(ab);
break;
}
+ case AUDIT_SET_CONTID: {
+ struct audit_contid_status *s = data;
+ struct task_struct *tsk;
+
+ /* check if new data is valid */
+ if (nlmsg_len(nlh) < sizeof(*s))
+ return -EINVAL;
+ tsk = find_get_task_by_vpid(s->pid);
+ if (!tsk)
+ return -EINVAL;
+
+ err = audit_set_contid(tsk, s->id);
+ put_task_struct(tsk);
+ return err;
+ break;
+ }
+ case AUDIT_GET_CONTID:
+ err = audit_get_contid_status(skb);
+ if (err)
+ return err;
+ break;
default:
err = -EINVAL;
break;
diff --git a/kernel/audit.h b/kernel/audit.h
index c9b73abfd6a0..25732fbc47a4 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -224,6 +224,11 @@ static inline int audit_hash_contid(u64 contid)
#define AUDIT_CONTID_COUNT 1 << 16
+struct audit_contid_status {
+ pid_t pid;
+ u64 id;
+};
+
/* Indicates that audit should log the full pathname. */
#define AUDIT_NAME_FULL -1
--
1.8.3.1
next prev parent reply other threads:[~2019-09-19 1:27 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-19 1:22 [PATCH ghak90 V7 00/21] audit: implement container identifier Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 01/21] audit: collect audit task parameters Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 02/21] audit: add container id Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 03/21] audit: read container ID of a process Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 04/21] audit: convert to contid list to check for orch/engine ownership Richard Guy Briggs
2019-09-26 14:46 ` Neil Horman
2019-10-25 20:00 ` Richard Guy Briggs
2019-10-28 12:20 ` Neil Horman
2019-10-11 0:38 ` Paul Moore
2019-10-25 21:00 ` Richard Guy Briggs
2019-11-08 18:26 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 05/21] audit: log drop of contid on exit of last task Richard Guy Briggs
2019-10-11 0:38 ` Paul Moore
2019-10-25 19:43 ` Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 06/21] audit: contid limit of 32k imposed to avoid DoS Richard Guy Briggs
2019-09-27 12:51 ` Neil Horman
2019-10-11 0:38 ` Paul Moore
2019-10-24 21:23 ` Richard Guy Briggs
2019-11-08 17:49 ` Paul Moore
2019-12-17 18:45 ` Richard Guy Briggs
2019-12-17 19:25 ` Steve Grubb
2019-12-17 19:56 ` Richard Guy Briggs
2019-10-25 20:15 ` Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 07/21] audit: log container info of syscalls Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 08/21] audit: add contid support for signalling the audit daemon Richard Guy Briggs
2019-10-11 0:39 ` Paul Moore
2019-10-25 19:20 ` Richard Guy Briggs
2019-11-08 17:41 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 09/21] audit: add support for non-syscall auxiliary records Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 10/21] audit: add containerid support for user records Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 11/21] audit: add containerid filtering Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 12/21] audit: add support for containerid to network namespaces Richard Guy Briggs
2019-10-11 0:39 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 13/21] audit: NETFILTER_PKT: record each container ID associated with a netNS Richard Guy Briggs
2019-10-11 0:39 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 14/21] audit: contid check descendancy and nesting Richard Guy Briggs
2019-10-11 0:40 ` Paul Moore
2019-10-24 22:08 ` Richard Guy Briggs
2019-10-30 20:32 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 15/21] sched: pull task_is_descendant into kernel/sched/core.c Richard Guy Briggs
2019-10-11 0:40 ` Paul Moore
2019-09-19 1:22 ` Richard Guy Briggs [this message]
2019-10-11 0:40 ` [PATCH ghak90 V7 16/21] audit: add support for contid set/get by netlink Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 17/21] audit: add support for loginuid/sessionid " Richard Guy Briggs
2019-10-11 0:40 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 18/21] audit: track container nesting Richard Guy Briggs
2019-10-11 0:40 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 19/21] audit: check cont depth Richard Guy Briggs
2019-09-19 1:22 ` [PATCH ghak90 V7 20/21] audit: add capcontid to set contid outside init_user_ns Richard Guy Briggs
2019-10-19 1:39 ` Richard Guy Briggs
2019-10-21 19:53 ` Paul Moore
2019-10-21 21:38 ` Richard Guy Briggs
2019-10-21 21:43 ` Paul Moore
2019-10-21 23:57 ` Richard Guy Briggs
2019-10-22 0:31 ` Paul Moore
2019-10-22 12:13 ` Neil Horman
2019-10-22 14:04 ` Paul Moore
2019-10-22 20:06 ` Richard Guy Briggs
2019-10-22 14:27 ` Richard Guy Briggs
2019-10-22 14:34 ` Paul Moore
2019-10-24 21:00 ` Richard Guy Briggs
2019-10-30 20:27 ` Paul Moore
2019-10-30 22:03 ` Richard Guy Briggs
2019-10-31 13:59 ` Paul Moore
2019-10-31 14:50 ` Steve Grubb
2019-10-31 23:37 ` Paul Moore
2019-11-01 1:02 ` Duncan Roe
2019-11-01 15:09 ` Richard Guy Briggs
2019-11-01 15:13 ` Steve Grubb
2019-11-01 15:21 ` Richard Guy Briggs
2019-11-01 16:22 ` Paul Moore
2019-09-19 1:22 ` [PATCH ghak90 V7 21/21] audit: add proc interface for capcontid Richard Guy Briggs
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