Re: [PATCH net-next v6 01/18] net: Declare MSG_SPLICE_PAGES internal sendmsg() flag

[David Howells]

Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:

> Note that io_sendmsg_prep() handles both IORING_OP_SENDMSG and IORING_OP_SEND,
> so this pair of functions can hit the same request.  And sqe->msg_flags is
> not sanitized at all - it comes straight from user buffer.

Assuming ____sys_sendmsg() is fixed, I think it should be sufficient to make
io_send() and io_send_zc().  io_sendmsg() and io_sendmsg_zc() will go through
____sys_sendmsg().

David