Commit 7d68536b authored Dec 22, 2014 by Johannes Berg Committed by David S. Miller Dec 27, 2014

netlink: call unbind when releasing socket



Currently, netlink_unbind() is only called when the socket
explicitly unbinds, which limits its usefulness (luckily
there are no users of it yet anyway.)

Call netlink_unbind() also when a socket is released, so it
becomes possible to track listeners with this callback and
without also implementing a netlink notifier (and checking
netlink_has_listeners() in there.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent b10dcb3b

net/netlink/af_netlink.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1246,6 +1246,13 @@ static int netlink_release(struct socket *sock)
		netlink_table_ungrab();
		}

		if (nlk->netlink_unbind) {
		int i;

		for (i = 0; i < nlk->ngroups; i++)
		if (test_bit(i, nlk->groups))
		nlk->netlink_unbind(i + 1);
		}
		kfree(nlk->groups);
		nlk->groups = NULL;