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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for fdt_subnode_offset()
* 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"
static int check_subnode(struct fdt_header *fdt, int parent, const char *name)
{
int offset;
const struct fdt_node_header *nh;
uint32_t tag;
verbose_printf("Checking subnode \"%s\" of %d...", name, parent);
offset = fdt_subnode_offset(fdt, parent, name);
verbose_printf("offset %d...", offset);
if (offset < 0)
FAIL("fdt_subnode_offset(\"%s\"): %s", name, fdt_strerror(offset));
nh = fdt_offset_ptr(fdt, offset, sizeof(*nh));
verbose_printf("pointer %p\n", nh);
if (! nh)
FAIL("NULL retrieving subnode \"%s\"", name);
tag = fdt32_to_cpu(nh->tag);
if (tag != FDT_BEGIN_NODE)
FAIL("Incorrect tag 0x%08x on property \"%s\"", tag, name);
if (!nodename_eq(nh->name, name))
FAIL("Subnode name mismatch \"%s\" instead of \"%s\"",
nh->name, name);
return offset;
}
int main(int argc, char *argv[])
{
void *fdt;
int subnode1_offset, subnode2_offset;
int subsubnode1_offset, subsubnode2_offset, subsubnode2_offset2;
int ss12_off, ss21_off;
test_init(argc, argv);
fdt = load_blob_arg(argc, argv);
subnode1_offset = check_subnode(fdt, 0, "subnode@1");
subnode2_offset = check_subnode(fdt, 0, "subnode@2");
if (subnode1_offset == subnode2_offset)
FAIL("Different subnodes have same offset");
check_property_cell(fdt, subnode1_offset, "prop-int", TEST_VALUE_1);
check_property_cell(fdt, subnode2_offset, "prop-int", TEST_VALUE_2);
subsubnode1_offset = check_subnode(fdt, subnode1_offset, "subsubnode");
subsubnode2_offset = check_subnode(fdt, subnode2_offset, "subsubnode@0");
subsubnode2_offset2 = check_subnode(fdt, subnode2_offset, "subsubnode");
check_property_cell(fdt, subsubnode1_offset, "prop-int", TEST_VALUE_1);
check_property_cell(fdt, subsubnode2_offset, "prop-int", TEST_VALUE_2);
check_property_cell(fdt, subsubnode2_offset2, "prop-int", TEST_VALUE_2);
if (subsubnode2_offset != subsubnode2_offset2)
FAIL("Different offsets with and without unit address");
check_subnode(fdt, subnode1_offset, "ss1");
ss21_off = fdt_subnode_offset(fdt, subnode2_offset, "ss1");
if (ss21_off != -FDT_ERR_NOTFOUND)
FAIL("Incorrectly found ss1 in subnode2");
ss12_off = fdt_subnode_offset(fdt, subnode1_offset, "ss2");
if (ss12_off != -FDT_ERR_NOTFOUND)
FAIL("Incorrectly found ss2 in subnode1");
check_subnode(fdt, subnode2_offset, "ss2");
PASS();
}
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