Commit b558ff79 authored Mar 06, 2007 by David S. Miller

[NETLINK]: Mirror UDP MSG_TRUNC semantics.



If the user passes MSG_TRUNC in via msg_flags, return
the full packet size not the truncated size.

Idea from Herbert Xu and Thomas Graf.

Signed-off-by: David S. Miller <davem@davemloft.net>

parent b7aa0bf7

net/netlink/af_netlink.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1242,6 +1242,9 @@ static int netlink_recvmsg(struct kiocb kiocb, struct socket sock,

		scm_recv(sock, msg, siocb->scm, flags);

		if (flags & MSG_TRUNC)
		copied = skb->len;

		out:
		netlink_rcv_wake(sk);
		return err ? : copied;