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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-03-06 17:02:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:23:35 -0700 |
| commit | b558ff799977a4eda8b3823d1cf6c1c33becb671 (patch) | |
| tree | b68b90c1891120e2904fd5b68d9192ef6ae74d43 | |
| parent | b7aa0bf70c4afb9e38be25f5c0922498d0f8684c (diff) | |
| download | linux-b558ff799977a4eda8b3823d1cf6c1c33becb671.tar.bz2 | |
[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>
| -rw-r--r-- | net/netlink/af_netlink.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index c48b0f49f003..5890210d7730 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -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; |