diff options
Diffstat (limited to 'kernel/audit.c')
| -rw-r--r-- | kernel/audit.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index 2eeea9a1424..be55cb50363 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -78,9 +78,13 @@ static int audit_default; /* If auditing cannot proceed, audit_failure selects what happens. */ static int audit_failure = AUDIT_FAIL_PRINTK; -/* If audit records are to be written to the netlink socket, audit_pid - * contains the (non-zero) pid. */ +/* + * If audit records are to be written to the netlink socket, audit_pid + * contains the pid of the auditd process and audit_nlk_pid contains + * the pid to use to send netlink messages to that process. + */ int audit_pid; +static int audit_nlk_pid; /* If audit_rate_limit is non-zero, limit the rate of sending audit records * to that number per second. This prevents DoS attacks, but results in @@ -170,7 +174,9 @@ void audit_panic(const char *message) printk(KERN_ERR "audit: %s\n", message); break; case AUDIT_FAIL_PANIC: - panic("audit: %s\n", message); + /* test audit_pid since printk is always losey, why bother? */ + if (audit_pid) + panic("audit: %s\n", message); break; } } @@ -348,10 +354,11 @@ static int kauditd_thread(void *dummy) wake_up(&audit_backlog_wait); if (skb) { if (audit_pid) { - int err = netlink_unicast(audit_sock, skb, audit_pid, 0); + int err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0); if (err < 0) { BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */ printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid); + audit_log_lost("auditd dissapeared\n"); audit_pid = 0; } } else { @@ -623,6 +630,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) sid, 1); audit_pid = new_pid; + audit_nlk_pid = NETLINK_CB(skb).pid; } if (status_get->mask & AUDIT_STATUS_RATE_LIMIT) err = audit_set_rate_limit(status_get->rate_limit, @@ -1350,17 +1358,19 @@ void audit_log_end(struct audit_buffer *ab) if (!audit_rate_check()) { audit_log_lost("rate limit exceeded"); } else { + struct nlmsghdr *nlh = nlmsg_hdr(ab->skb); if (audit_pid) { - struct nlmsghdr *nlh = nlmsg_hdr(ab->skb); nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0); skb_queue_tail(&audit_skb_queue, ab->skb); ab->skb = NULL; wake_up_interruptible(&kauditd_wait); - } else if (printk_ratelimit()) { - struct nlmsghdr *nlh = nlmsg_hdr(ab->skb); - printk(KERN_NOTICE "type=%d %s\n", nlh->nlmsg_type, ab->skb->data + NLMSG_SPACE(0)); - } else { - audit_log_lost("printk limit exceeded\n"); + } else if (nlh->nlmsg_type != AUDIT_EOE) { + if (printk_ratelimit()) { + printk(KERN_NOTICE "type=%d %s\n", + nlh->nlmsg_type, + ab->skb->data + NLMSG_SPACE(0)); + } else + audit_log_lost("printk limit exceeded\n"); } } audit_buffer_free(ab); |