/*

 * libfdt - Flat Device Tree manipulation

 *	Testcase for fdt_parent_offset()

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

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <stdint.h>

#include <fdt.h>

#include <libfdt.h>

#include "tests.h"

#include "testdata.h"

int path_parent_len(const char *path)

{

	const char *p = strrchr(path, '/');

	if (!p)

		TEST_BUG();

	if (p == path)

		return 1;

	else

		return p - path;

}

void check_path(struct fdt_header *fdt, const char *path)

{

	char *parentpath;

	int nodeoffset, parentoffset, parentpathoffset, pathparentlen;

	pathparentlen = path_parent_len(path);

	parentpath = alloca(pathparentlen + 1);

	strncpy(parentpath, path, pathparentlen);

	parentpath[pathparentlen] = '\0';

	verbose_printf("Path: \"%s\"\tParent: \"%s\"\n", path, parentpath);

	nodeoffset = fdt_path_offset(fdt, path);

	if (nodeoffset < 0)

		FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset));

	parentpathoffset = fdt_path_offset(fdt, parentpath);

	if (parentpathoffset < 0)

		FAIL("fdt_path_offset(%s): %s", parentpath,

		     fdt_strerror(parentpathoffset));

	parentoffset = fdt_parent_offset(fdt, nodeoffset);

	if (parentoffset < 0)

		FAIL("fdt_parent_offset(): %s", fdt_strerror(parentoffset));

	if (parentoffset != parentpathoffset)

		FAIL("fdt_parent_offset() returns %d instead of %d",

		     parentoffset, parentpathoffset);

}

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

{

	void *fdt;

	int err;

	test_init(argc, argv);

	fdt = load_blob_arg(argc, argv);

	check_path(fdt, "/subnode@1");

	check_path(fdt, "/subnode@2");

	check_path(fdt, "/subnode@1/subsubnode");

	check_path(fdt, "/subnode@2/subsubnode@0");

	err = fdt_parent_offset(fdt, 0);

	if (err != -FDT_ERR_NOTFOUND)

		FAIL("fdt_parent_offset(/) returns %d instead of "

		     "-FDT_ERR_NOTFOUND", err);

	PASS();

}