Jens Axboe d624594445 net: disallow ancillary data for __sys_{send,recv}msg_file() ...

[ Upstream commit d69e07793f ]

Only io_uring uses (and added) these, and we want to disallow the
use of sendmsg/recvmsg for anything but regular data transfers.
Use the newly added prep helper to split the msghdr copy out from
the core function, to check for msg_control and msg_controllen
settings. If either is set, we return -EINVAL.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-12-04 22:30:44 +01:00

95 KiB

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