io_uring_prep_close_direct(3) — Linux manual page


io_uring_prep_close(3)       liburing Manual      io_uring_prep_close(3)

NAME         top

       io_uring_prep_close - prepare a file descriptor close request

SYNOPSIS         top

       #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         top

       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

       These functions prepare an async close(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

SEE ALSO         top

       io_uring_get_sqe(3), io_uring_submit(3), close(2)

COLOPHON         top

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       ⟨⟩ on 2024-06-14.  (At that
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liburing-2.2                 March 13, 2022       io_uring_prep_close(3)

Pages that refer to this page: io_uring_prep_fixed_fd_install(3)