/* SPDX-License-Identifier: LGPL-2.1-only */

/* Copyright (C) 2020 Gediminas Jakutis */

#include <errno.h>
#include <string.h>
#include <sys/random.h>
#include "datagen.h"
#include "defs.h"

static struct entry_l buf;

struct entry_l *gen_get_array(struct stream * const in, struct entry_l * const store)
{
	struct entry_l *ret;
	int errn;

	(void) in; /* lol says librin, lmao */

	if (getrandom(&buf.val, sizeof(buf.val), 0ul) == sizeof(buf.val)) {
		*store = buf;
		ret = store;
	} else {
		errn = errno;
		ret = NULL;
		rin_err("error reading urandom: %s", strerror(errn));
	}

	return ret;
}

struct entry_l *gen_get_list(struct stream * const in, struct entry_l * const store)
{
	struct entry_l *ret;

	try_s((ret = gen_get_array(in, store)), err);
	ret->next = NULL;

err:
	return ret;
}