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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for fdt_get_path()
* Copyright (C) 2006 David Gibson, IBM Corporation.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <libfdt.h>
#include "tests.h"
#include "testdata.h"
#define POISON ('\xff')
static void check_path_buf(void *fdt, const char *path, int pathlen, int buflen)
{
int offset;
char buf[buflen+1];
int len;
offset = fdt_path_offset(fdt, path);
if (offset < 0)
FAIL("Couldn't find path \"%s\": %s", path, fdt_strerror(offset));
memset(buf, POISON, sizeof(buf)); /* poison the buffer */
len = fdt_get_path(fdt, offset, buf, buflen);
verbose_printf("get_path() %s -> %d -> %s\n", path, offset,
len >= 0 ? buf : "<error>");
if (buflen <= pathlen) {
if (len != -FDT_ERR_NOSPACE)
FAIL("fdt_get_path([%d bytes]) returns %d with "
"insufficient buffer space", buflen, len);
} else {
if (len < 0)
FAIL("fdt_get_path([%d bytes]): %s", buflen,
fdt_strerror(len));
if (len != 0)
FAIL("fdt_get_path([%d bytes]) returns %d "
"instead of 0", buflen, len);
if (strcmp(buf, path) != 0)
FAIL("fdt_get_path([%d bytes]) returns \"%s\" "
"instead of \"%s\"", buflen, buf, path);
}
if (buf[buflen] != POISON)
FAIL("fdt_get_path([%d bytes]) overran buffer", buflen);
}
static void check_path(void *fdt, const char *path)
{
int pathlen = strlen(path);
check_path_buf(fdt, path, pathlen, 1024);
check_path_buf(fdt, path, pathlen, pathlen+1);
check_path_buf(fdt, path, pathlen, pathlen);
check_path_buf(fdt, path, pathlen, 0);
check_path_buf(fdt, path, pathlen, 2);
}
int main(int argc, char *argv[])
{
void *fdt;
test_init(argc, argv);
fdt = load_blob_arg(argc, argv);
check_path(fdt, "/");
check_path(fdt, "/subnode@1");
check_path(fdt, "/subnode@2");
check_path(fdt, "/subnode@1/subsubnode");
check_path(fdt, "/subnode@2/subsubnode@0");
PASS();
}
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