First of all, I'm not aware of the whole discussion, ignore this if it has been brought to attention already.
> > Yep, the netlink people should be able to help - they known what would be > > required for not sending messages in case there is no listener registered. > > > > Maybe its already possible? I have never used netlink myself. The easiest way is to use netlink_broadcast() and have userspace register to a netlink multicast group (set .nl_groups before connecting the socket). The netlink message will be sent to only those netlink sockets assigned to the group, no message will be send out if no userspace listeners has registered. Did you have a look at the syscall enter/exit audit netlink hooks before trying to invent your own thing? I can also give you some code if you want, I use it to track the path of skbs in the net stack. It puts events into a preallocated ring buffer and a separate kernel thread broadcasts them over netlink. The events can be enqueued in any context at the cost of a possible ring buffer overrun resulting in loss of events. It's just a debugging hack though. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
