#include <unistd.h>
#include <stddef.h>
#include <errno.h>
#include "datagen.h"
#include "defs.h"

int gen_get(struct stream *in, size_t idx, struct entry_l *data, int tag)
{
	int ret = 0;
	(void) idx;

	if (tag) {
		data->prev = 0;
		data->next = 0;
	}

	in->prev_idx = -1;
	ret = read(in->fd, &data->val, sizeof(data->val));

	if (ret != sizeof(data->val)) {
		ret = ret > 0 ? EAGAIN : errno;
	}

	return ret;
}