NAME

       io_uring_prep_fallocate - prepare a fallocate request

SYNOPSIS

       #include <fcntl.h>
       #include <liburing.h>

       void io_uring_prep_fallocate(struct io_uring_sqe *sqe,
                                    int fd,
                                    int mode,
                                    __u64 offset,
                                    __u64 len);

DESCRIPTION

       The  io_uring_prep_fallocate(3)  function prepares a fallocate request. The submission queue entry sqe is
       setup to use the file descriptor pointed to by fd to start a fallocate operation  described  by  mode  at
       offset offset and len length in bytes.

       This function prepares an async fallocate(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), fallocate(2)

liburing-2.2                                     March 13, 2022                       io_uring_prep_fallocate(3)