From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Date: Wed, 10 Feb 2010 20:26:18 +0000 (+0000)
Subject: dccp: support for passing MSG_TRUNC
X-Git-Tag: v2.6.34-rc1~233^2~341
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55d955902a7f78e3e7c9ddbc71a4a050d9d44810;p=pandora-kernel.git

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>
---

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