[PATCH 5/8] io_uring/net: clean io_msg_copy_hdr()

Pavel Begunkov
2025-01-28T20:56:06Z

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>
---
io_uring/net.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/io_uring/net.c b/io_uring/net.c
index e72205802055f..dedf274fc049a 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -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;
--
2.47.1