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)

liburing-2.2                                     March 13, 2022                           io_uring_prep_close(3)