From: Stephen Smalley <sds@tycho.nsa.gov>
Date: Wed, 10 Jun 2015 12:44:59 +0000 (-0400)
Subject: net/unix: support SCM_SECURITY for stream sockets
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~134^2~98
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37a9a8df8ce9de6ea73349c9ac8bdf6ba4ec4f70;p=pandora-kernel.git

net/unix: support SCM_SECURITY for stream sockets

SCM_SECURITY was originally only implemented for datagram sockets,
not for stream sockets.  However, SCM_CREDENTIALS is supported on
Unix stream sockets.  For consistency, implement Unix stream support
for SCM_SECURITY as well.  Also clean up the existing code and get
rid of the superfluous UNIXSID macro.

Motivated by https://bugzilla.redhat.com/show_bug.cgi?id=1224211,
where systemd was using SCM_CREDENTIALS and assumed wrongly that
SCM_SECURITY was also supported on Unix stream sockets.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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