oracular (3) io_uring_prep_sync_file_range.3.gz

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)