/* This file is part of Lwt, released under the MIT license. See LICENSE.md for
   details, or visit https://github.com/ocsigen/lwt/blob/master/LICENSE.md. */



#include "lwt_config.h"

#if !defined(LWT_ON_WINDOWS)

#include <caml/mlvalues.h>
#include <caml/unixsupport.h>
#include <caml/bigarray.h>

CAMLprim value lwt_unix_bytes_read(value val_fd, value val_buf, value val_ofs,
                                   value val_len)
{
    long ret;
    ret = read(Int_val(val_fd),
               (char *)Caml_ba_array_val(val_buf)->data + Long_val(val_ofs),
               Long_val(val_len));
    if (ret == -1) uerror("read", Nothing);
    return Val_long(ret);
}
#endif
