tree e56d33b78b483476b9560370dcf37db7c40c886a
parent cfc0861ba32643c63901832a583054bea0445961
author Gerrit Renker <gerrit@erg.abdn.ac.uk> 1265833578 +0000
committer David S. Miller <davem@davemloft.net> 1266022270 -0800

dccp: support for passing MSG_TRUNC

DCCP is datagram-oriented but lacks UDP's support for MSG_TRUNC as defined in
recvmsg(2)/recv(2). Hence the following 'Hello world\0' receiver

  len = recv(fd, buf, 10, MSG_PEEK | MSG_TRUNC);

wrongly (always) returns 10, while in UDP it returns 12 as expected.
This patch adds the missing MSG_TRUNC support to recvmsg().

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>