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authorChris Wright <chrisw@osdl.org>2005-04-29 17:19:14 +0100
committer <dwmw2@shinybook.infradead.org>2005-04-29 17:19:14 +0100
commit37509e749dc2072e667db806ef24b9e897f61b8a (patch)
tree62e8c43ba360a9d0584822b06126284e4db428b8 /kernel/audit.c
parentc94c257c88c517f251da273a15c654224c7b6e21 (diff)
downloadop-kernel-dev-37509e749dc2072e667db806ef24b9e897f61b8a.zip
op-kernel-dev-37509e749dc2072e667db806ef24b9e897f61b8a.tar.gz
[AUDIT] Requeue messages at head of queue, up to audit_backlog
If netlink_unicast() fails, requeue the skb back at the head of the queue it just came from, instead of the tail. And do so unless we've exceeded the audit_backlog limit; not according to some other arbitrary limit. From: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index 587d3b2..4a697c7 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -142,7 +142,6 @@ struct audit_buffer {
int total;
int type;
int pid;
- int count; /* Times requeued */
};
void audit_set_type(struct audit_buffer *ab, int type)
@@ -526,9 +525,9 @@ static inline int audit_log_drain(struct audit_buffer *ab)
retval = netlink_unicast(audit_sock, skb, audit_pid,
MSG_DONTWAIT);
}
- if (retval == -EAGAIN && ab->count < 5) {
- ++ab->count;
- skb_queue_tail(&ab->sklist, skb);
+ if (retval == -EAGAIN &&
+ (atomic_read(&audit_backlog)) < audit_backlog_limit) {
+ skb_queue_head(&ab->sklist, skb);
audit_log_end_irq(ab);
return 1;
}
@@ -666,7 +665,6 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx)
ab->total = 0;
ab->type = AUDIT_KERNEL;
ab->pid = 0;
- ab->count = 0;
#ifdef CONFIG_AUDITSYSCALL
if (ab->ctx)
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