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io_uring/net: clean io_msg_copy_hdr()

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Put msg->msg_iov into a local variable in io_msg_copy_hdr(), it reads
better and clearly shows the used types.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/6a5d4f7a96b10e571d6128be010166b3aaf7afd5.1738087204.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2025-01-28 20:56:13 +00:00 committed by Jens Axboe
parent fefcb0dcd0
commit 2b350f756b
1 changed files with 4 additions and 3 deletions
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7
io_uring/net.c
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@ -280,11 +280,12 @@ static int io_msg_copy_hdr(struct io_kiocb *req, struct io_async_msghdr *iomsg,
ret = -EINVAL;
goto ua_end;
} else {
struct iovec __user *uiov = msg->msg_iov;
/* we only need the length for provided buffers */
if (!access_ok(&msg->msg_iov[0].iov_len, sizeof(__kernel_size_t)))
if (!access_ok(&uiov->iov_len, sizeof(uiov->iov_len)))
goto ua_end;
unsafe_get_user(iov->iov_len, &msg->msg_iov[0].iov_len,
ua_end);
unsafe_get_user(iov->iov_len, &uiov->iov_len, ua_end);
sr->len = iov->iov_len;
}
ret = 0;