On Sun, Jan 14, 2018 at 09:01:00AM +0100, Stephan Müller wrote: > The syscall io_submit sends data to the kernel and invokes the respective > handler function in the kernel such as the recvmsg handler. What I am > wondering is whether there is a way to send CMSG data along with the > io_submit > syscall? If not, is CMSG handling with the AIO syscalls possible at all?
Not as-is, but it could be easily added by repurposing unused fields in the iocb. The big question is if it should be done to the existing IOCB_CMD_PREADV/IOCB_CMD_PWRITEV types, or if new SENDMSG/RECVMSG ones should be added instead. Also you really want to Cc the relevant lists, I've only accidentally seen this on linux-kernel. > > Thank you very much. > > [1] http://www.chronox.de/libkcapi.html > > Ciao > Stephan > > ---end quoted text---
