>> @@ -1250,6 +1251,12 @@ int io_recvzc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) >> zc->ifq = req->ctx->ifq; >> if (!zc->ifq) >> return -EINVAL; >> + zc->len = READ_ONCE(sqe->len); >> + if (zc->len == UINT_MAX) >> + return -EINVAL; > > The uapi gives u32, if we're using a special value it should > match the type. ~(u32)0 Any syscall in Linux is capped at 2G anyway, so I think all of this special meaning of ->len just needs to go away. Just ask for whatever bytes you want, but yes more than 2G will not be supported anyway. -- Jens Axboe
