Commit 76dadd76 authored Feb 28, 2010 by Eric W. Biederman Committed by David S. Miller Feb 28, 2010

scm: Only support SCM_RIGHTS on unix domain sockets.



We use scm_send and scm_recv on both unix domain and
netlink sockets, but only unix domain sockets support
everything required for file descriptor passing,
so error if someone attempts to pass file descriptors
over netlink sockets.

Cc: stable@kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 39286fa4

net/core/scm.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -156,6 +156,8 @@ int __scm_send(struct socket sock, struct msghdr msg, struct scm_cookie *p)
		switch (cmsg->cmsg_type)
		{
		case SCM_RIGHTS:
		if (!sock->ops \|\| sock->ops->family != PF_UNIX)
		goto error;
		err=scm_fp_copy(cmsg, &p->fp);
		if (err<0)
		goto error;