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Message-Id: <1266252393-20911-6-git-send-email-fw@strlen.de> Date: Mon, 15 Feb 2010 17:46:33 +0100 From: Florian Westphal <fw@...len.de> To: netdev@...r.kernel.org Cc: Florian Westphal <fwestphal@...aro.com> Subject: [PATCH 5/5] net: sock_aio_write: set CMSG_MSG_COMPAT flag if is_compat_task From: Florian Westphal <fwestphal@...aro.com> some programs (e.g. pluto ike daemon), send netlink data to the kernel via write(). So far, the CMSG_MSG_COMPAT flag is not set in this case, which results in the kernel interpreting the netlink data the wrong way. An alternative solution is to switch userspace to sendmsg() when using netlink sockets. Signed-off-by: Florian Westphal <fwestphal@...aro.com> --- net/socket.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/net/socket.c b/net/socket.c index 769c386..e6a6a67 100644 --- a/net/socket.c +++ b/net/socket.c @@ -837,6 +837,10 @@ static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, msg->msg_iov = (struct iovec *)iov; msg->msg_iovlen = nr_segs; msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; +#ifdef CONFIG_COMPAT + if (is_compat_task()) + msg->msg_flags |= MSG_CMSG_COMPAT; +#endif if (sock->type == SOCK_SEQPACKET) msg->msg_flags |= MSG_EOR; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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