From: dingtianhong <dingtianhong@huawei.com>
Date: Mon, 25 Mar 2013 17:02:04 +0000 (+0000)
Subject: af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
X-Git-Tag: v3.9-rc5~28^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14134f6584212d585b310ce95428014b653dfaf6;p=pandora-kernel.git

af_unix: dont send SCM_CREDENTIAL when dest socket is NULL

SCM_SCREDENTIALS should apply to write() syscalls only either source or destination
socket asserted SOCK_PASSCRED. The original implememtation in maybe_add_creds is wrong,
and breaks several LSB testcases ( i.e. /tset/LSB.os/netowkr/recvfrom/T.recvfrom).

Origionally-authored-by: Karel Srot <ksrot@redhat.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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