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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20200303235053.16309-5-axboe@kernel.dk> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 04/03/2020 02:50, Jens Axboe wrote: > This allows a chain link to set ->fd to IOSQE_FD_LAST_OPEN, which will > then be turned into the results from the last open (or accept) request > in the chain. If no open has been done, this isn't valid and the request > will be errored with -EBADF. > > With this, we can define chains of open+read+close, where the read and > close part can work on the fd instantiated by the open request. > > Totally a work in progress, POC so far. I'm concerned of having and supporting all these IOSQE flavours. Isn't it the thing that can be potentially done with eBPF? -- Pavel Begunkov