Re: [RFC][PATCH] audit: Simplify by assuming the callers socket buffer is large enough

The second user Eric patched, audit_send_list(), can grow without bound. The number of skb's is going to be the size of the number of audit rules that root loaded. We run the list of rules, generate an skb per rule, and add all of them to an skb_buff_head. We then pass the skb_buff_head to a kthread so that current will be able to read/drain the socket. There really is no limit to how big the skb_buff_head could possibly grow. This doesn't necessarily absolutely have to be lossless but it can actually quite reasonably be a whole lot of data that needs to get sent. I know of no way to deliver unbounded lengths of data to the current task via netlink without blocking on more space in the socket. Even if the socket rmem was MAX_INT, how can we deliver more? The rule size is unbounded. How do I get an unbounded amount of data onto this side of the socket when I have to generate it all during the request...