Re: [RFC][PATCH] audit: log join and part events to the read-only multicast log socket

On Wed, 2014-10-22 at 10:25 -0400, Steve Grubb wrote: > 12) The struct audit_status was extended to include version and > backlog_wait_time. I cannot determine at runtime if they exist, meaning > that software compiled on a new kernel runs on an old kernel, it will be > reading random stack or heap to make decisions. The correct solution > would be to make a new struct with planned expansion capability with > version as the first element so any changes can be signaled. This new > struct would be sent using a new netlink command. Incorrect. The length of the message makes it perfectly clear how much data the kernel sent, and thus if that data includes the version or backlog_wait_time. I thought this had been discussed before... The answer is 'check how much data you got from the kernel'