// SPDX-License-Identifier: LGPL-2.1-or-later

/*

 * libfdt - Flat Device Tree manipulation

 *	Basic testcase for read-only access

 * Copyright (C) 2006 David Gibson, IBM Corporation.

 */

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <limits.h>

#include <stdint.h>

#include <libfdt.h>

#include "tests.h"

#include "testdata.h"

int main(int argc, char *argv[])

{

	void *fdt, *fdt1;

	void *buf;

	int oldsize, bufsize, packsize;

	int err;

	const char *inname;

	char outname[PATH_MAX];

	test_init(argc, argv);

	fdt = load_blob_arg(argc, argv);

	inname = argv[1];

	oldsize = fdt_totalsize(fdt);

	bufsize = oldsize * 2;

	buf = xmalloc(bufsize);

	/* don't leak uninitialized memory into our output */

	memset(buf, 0, bufsize);

	fdt1 = buf;

	err = fdt_open_into(fdt, fdt1, bufsize);

	if (err)

		FAIL("fdt_open_into(): %s", fdt_strerror(err));

	sprintf(outname, "opened.%s", inname);

	save_blob(outname, fdt1);

	err = fdt_pack(fdt1);

	if (err)

		FAIL("fdt_pack(): %s", fdt_strerror(err));

	sprintf(outname, "repacked.%s", inname);

	save_blob(outname, fdt1);

	packsize = fdt_totalsize(fdt1);

	verbose_printf("oldsize = %d, bufsize = %d, packsize = %d\n",

		       oldsize, bufsize, packsize);

	PASS();

}