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Subject[PATCH RFC 21/48] Audit: pass proper user namespace to audit_log_common_recv_msg
Date
The audit log that generated in user namespace should be
received by the auditd running in this user namespace.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
---
kernel/audit.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index 594e4e1..c8329ce 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -604,25 +604,26 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
return err;
}

-static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
+static int audit_log_common_recv_msg(struct user_namespace *ns,
+ struct audit_buffer **ab, u16 msg_type,
kuid_t auid, u32 ses, u32 sid)
{
int rc = 0;
char *ctx = NULL;
u32 len;

- if (!init_user_ns.audit.enabled) {
+ if (!ns->audit.enabled) {
*ab = NULL;
return rc;
}

- *ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
+ *ab = audit_log_start_ns(ns, NULL, GFP_KERNEL, msg_type);
if (unlikely(!*ab))
return rc;
audit_log_format(*ab, "pid=%d uid=%u auid=%u ses=%u",
task_tgid_vnr(current),
- from_kuid(&init_user_ns, current_uid()),
- from_kuid(&init_user_ns, auid), ses);
+ from_kuid(ns, current_uid()),
+ from_kuid(ns, auid), ses);
if (sid) {
rc = security_secid_to_secctx(sid, &ctx, &len);
if (rc)
@@ -739,7 +740,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (err)
break;
}
- audit_log_common_recv_msg(&ab, msg_type,
+ audit_log_common_recv_msg(ns, &ab, msg_type,
loginuid, sessionid, sid);

if (msg_type != AUDIT_USER_TTY)
@@ -756,7 +757,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
audit_log_n_untrustedstring(ab, data, size);
}
audit_set_pid(ab, NETLINK_CB(skb).portid);
- audit_log_end(ab);
+ audit_log_end_ns(ns, ab);
}
break;
case AUDIT_ADD:
@@ -764,12 +765,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (nlmsg_len(nlh) < sizeof(struct audit_rule))
return -EINVAL;
if (ns->audit.enabled == AUDIT_LOCKED) {
- audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+ audit_log_common_recv_msg(ns, &ab, AUDIT_CONFIG_CHANGE,
loginuid, sessionid, sid);

audit_log_format(ab, " audit_enabled=%d res=0",
ns->audit.enabled);
- audit_log_end(ab);
+ audit_log_end_ns(ns, ab);
return -EPERM;
}
/* fallthrough */
@@ -783,12 +784,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (nlmsg_len(nlh) < sizeof(struct audit_rule_data))
return -EINVAL;
if (ns->audit.enabled == AUDIT_LOCKED) {
- audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+ audit_log_common_recv_msg(ns, &ab, AUDIT_CONFIG_CHANGE,
loginuid, sessionid, sid);

audit_log_format(ab, " audit_enabled=%d res=0",
ns->audit.enabled);
- audit_log_end(ab);
+ audit_log_end_ns(ns, ab);
return -EPERM;
}
/* fallthrough */
@@ -800,11 +801,11 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case AUDIT_TRIM:
audit_trim_trees();

- audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+ audit_log_common_recv_msg(ns, &ab, AUDIT_CONFIG_CHANGE,
loginuid, sessionid, sid);

audit_log_format(ab, " op=trim res=1");
- audit_log_end(ab);
+ audit_log_end_ns(ns, ab);
break;
case AUDIT_MAKE_EQUIV: {
void *bufp = data;
@@ -832,7 +833,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
/* OK, here comes... */
err = audit_tag_tree(old, new);

- audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE,
+ audit_log_common_recv_msg(ns, &ab, AUDIT_CONFIG_CHANGE,
loginuid, sessionid, sid);

audit_log_format(ab, " op=make_equiv old=");
@@ -840,7 +841,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
audit_log_format(ab, " new=");
audit_log_untrustedstring(ab, new);
audit_log_format(ab, " res=%d", !err);
- audit_log_end(ab);
+ audit_log_end_ns(ns, ab);
kfree(old);
kfree(new);
break;
--
1.8.1.4


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