NAME

       io_uring_prep_sync_file_range - prepare a sync_file_range request

SYNOPSIS

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

       void io_uring_prep_sync_file_range(struct io_uring_sqe *sqe,
                                          int fd,
                                          unsigned len,
                                          __u64 offset,
                                          int flags);

DESCRIPTION

       The  io_uring_prep_sync_file_range(3)  function  prepares  a  sync_file_range request. The
       submission queue entry sqe is setup to use the file descriptor  fd  that  should  get  len
       bytes synced started at offset offset and with modifier flags in the flags argument.

       This  function prepares an async sync_file_range(2) request. See that man page for details
       on the arguments.

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), sync_file_range(2)