io_uring_prep_connect(3) — Linux manual page

io_uring_prep_connect(3)     liburing Manual    io_uring_prep_connect(3)

NAME

       io_uring_prep_connect - prepare a connect request

SYNOPSIS

       #include <sys/types.h>
       #include <sys/socket.h>
       #include <liburing.h>

       void io_uring_prep_connect(struct io_uring_sqe *sqe,
                                  int sockfd,
                                  const struct sockaddr *addr,
                                  socklen_t addrlen);

DESCRIPTION

       The io_uring_prep_connect(3) function prepares a connect request.
       The submission queue entry sqe is setup to use the file
       descriptor sockfd to start connecting to the destination
       described by the socket address at addr and of structure length
       addrlen.

       This function prepares an async connect(2) request. See that man
       page for details.

RETURN VALUE

       None

ERRORS

       The CQE res field will contain the result of the operation. See
       the related man page for details on possible values. Note that
       where synchronous system calls will return -1 on failure and set
       errno to the actual error value, io_uring never uses errno.
       Instead it returns the negated errno directly in the CQE res
       field.

NOTES

       As with any request that passes in data in a struct, that data
       must remain valid until the request has been successfully
       submitted. It need not remain valid until completion. Once a
       request has been submitted, the in-kernel state is stable. Very
       early kernels (5.4 and earlier) required state to be stable until
       the completion occurred. Applications can test for this behavior
       by inspecting the IORING_FEAT_SUBMIT_STABLE flag passed back from
       io_uring_queue_init_params(3).

SEE ALSO

       io_uring_get_sqe(3), io_uring_submit(3), connect(2)

COLOPHON

       This page is part of the liburing (A library for io_uring)
       project.  Information about the project can be found at 
       ⟨https://github.com/axboe/liburing⟩.  If you have a bug report for
       this manual page, send it to io-uring@vger.kernel.org.  This page
       was obtained from the project's upstream Git repository
       ⟨https://github.com/axboe/liburing⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-03.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

liburing-2.2                 March 13, 2022     io_uring_prep_connect(3)

Pages that refer to this page: io_uring_prep_connect(3)

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