To use eio_dir_copy(), you basically need the source and destination files (or directories), and set three callbacks:
- The notification callback, which allows you to know if a file or a directory is copied, and the progress of the copy. 
- The end callback, which is called when the copy is finished. 
- The error callback, which is called if an error occurred. You can then retrieve the error type as an errno error.
- Warning
- It is the user's duty to provide the "right target". It means that copying to '.' will copy the content directly inside '.' and not in a subdirectory.
Here is a simple example:
#include <Ecore.h>
#include <Eio.h>
static void
{
      {
         break;
         break;
      }
}
static void
_test_done_cb(
void *data, 
Eio_File *handler)
{
   printf("copy done\n");
}
static void
_test_error_cb(
int error, 
Eio_File *handler, 
void *data)
{
   fprintf(stderr, "error: [%s]\n", strerror(error));
}
int
main(int argc, char **argv)
{
   if (argc != 3)
     {
        fprintf(stderr, "eio_cp source_file destination_file\n");
        return -1;
     }
                     _test_notify_cb,
                     _test_done_cb,
                     _test_error_cb,
                     NULL);
   return 0;
}