io_uring_prep_connect(3) — Linux manual page


io_uring_prep_connect(3)     liburing Manual    io_uring_prep_connect(3)

NAME         top

       io_uring_prep_connect - prepare a connect request

SYNOPSIS         top

       #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         top

       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

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

RETURN VALUE         top


ERRORS         top

       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

NOTES         top

       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

SEE ALSO         top

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

COLOPHON         top

       This page is part of the liburing (A library for io_uring)
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       was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
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liburing-2.2                 March 13, 2022     io_uring_prep_connect(3)

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