io_uring_prep_close_direct(3) — Linux manual page

io_uring_prep_close(3)       liburing Manual      io_uring_prep_close(3)

NAME

       io_uring_prep_close - prepare a file descriptor close request

SYNOPSIS

       #include <liburing.h>

       void io_uring_prep_close(struct io_uring_sqe *sqe,
                                 int fd);

       void io_uring_prep_close_direct(struct io_uring_sqe *sqe,
                                       unsigned file_index);

DESCRIPTION

       The io_uring_prep_close(3) function prepares a close request. The
       submission queue entry sqe is setup to close the file descriptor
       indicated by fd.

       For a direct descriptor close request, the offset is specified by
       the file_index argument instead of the fd.  This is identical to
       unregistering the direct descriptor, and is provided as a
       convenience.

       These functions prepare an async close(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.

SEE ALSO

       io_uring_get_sqe(3), io_uring_submit(3), close(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_close(3)

Pages that refer to this page: io_uring_prep_fixed_fd_install(3)

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