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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for node existence
* Copyright (C) 2016 Konsulko Inc.
*/
#include <stdio.h>
#include <libfdt.h>
#include "tests.h"
#define CHECK(code) \
{ \
int err = (code); \
if (err) \
FAIL(#code ": %s", fdt_strerror(err)); \
}
/* 4k ought to be enough for anybody */
#define FDT_COPY_SIZE (4 * 1024)
static void *open_dt(char *path)
{
void *dt, *copy;
dt = load_blob(path);
copy = xmalloc(FDT_COPY_SIZE);
/*
* Resize our DTs to 4k so that we have room to operate on
*/
CHECK(fdt_open_into(dt, copy, FDT_COPY_SIZE));
free(dt);
return copy;
}
int main(int argc, char *argv[])
{
void *fdt_base;
int fail_config, exists, check_exists;
test_init(argc, argv);
fail_config = 0;
if (argc != 4)
fail_config = 1;
if (!fail_config) {
if (!strcmp(argv[2], "exists"))
check_exists = 1;
else if (!strcmp(argv[2], "not-exists"))
check_exists = 0;
else
fail_config = 1;
}
if (fail_config)
CONFIG("Usage: %s <base dtb> <[exists|not-exists]> <node-path>", argv[0]);
fdt_base = open_dt(argv[1]);
exists = fdt_path_offset(fdt_base, argv[3]) >= 0;
if (exists == check_exists)
PASS();
else
FAIL();
}
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