1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for string handling
* Copyright (C) 2015 NVIDIA Corporation
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <libfdt.h>
#include "tests.h"
#include "testdata.h"
static void check_expected_failure(const void *fdt, const char *path,
const char *property)
{
int offset, err;
offset = fdt_path_offset(fdt, "/");
if (offset < 0)
FAIL("Couldn't find path %s", path);
err = fdt_stringlist_count(fdt, offset, "#address-cells");
if (err != -FDT_ERR_BADVALUE)
FAIL("unexpectedly succeeded in parsing #address-cells\n");
err = fdt_stringlist_search(fdt, offset, "#address-cells", "foo");
if (err != -FDT_ERR_BADVALUE)
FAIL("found string in #address-cells: %d\n", err);
/*
* Note that the #address-cells property contains a small 32-bit
* unsigned integer, hence some bytes will be zero, and searching for
* the empty string will succeed.
*
* The reason for this oddity is that the function will exit when the
* first occurrence of the string is found, but in order to determine
* that the property does not contain a valid string list it would
* need to process the whole value.
*/
err = fdt_stringlist_search(fdt, offset, "#address-cells", "");
if (err != 0)
FAIL("empty string not found in #address-cells: %d\n", err);
/*
* fdt_getprop_string() can successfully extract strings from
* non-string properties. This is because it doesn't
* necessarily parse the whole property value, which would be
* necessary for it to determine if a valid string or string
* list is present.
*/
}
static void check_string_count(const void *fdt, const char *path,
const char *property, int count)
{
int offset, err;
offset = fdt_path_offset(fdt, path);
if (offset < 0)
FAIL("Couldn't find path %s", path);
err = fdt_stringlist_count(fdt, offset, property);
if (err < 0)
FAIL("Couldn't count strings in property %s of node %s: %d\n",
property, path, err);
if (err != count)
FAIL("String count for property %s of node %s is %d instead of %d\n",
path, property, err, count);
}
static void check_string_index(const void *fdt, const char *path,
const char *property, const char *string,
int idx)
{
int offset, err;
offset = fdt_path_offset(fdt, path);
if (offset < 0)
FAIL("Couldn't find path %s", path);
err = fdt_stringlist_search(fdt, offset, property, string);
if (err != idx)
FAIL("Index of %s in property %s of node %s is %d, expected %d\n",
string, property, path, err, idx);
}
static void check_string(const void *fdt, const char *path,
const char *property, int idx,
const char *string)
{
const char *result;
int offset, len;
offset = fdt_path_offset(fdt, path);
if (offset < 0)
FAIL("Couldn't find path %s", path);
result = fdt_stringlist_get(fdt, offset, property, idx, &len);
if (!result)
FAIL("Couldn't extract string %d from property %s of node %s: %d\n",
idx, property, path, len);
if (strcmp(string, result) != 0)
FAIL("String %d in property %s of node %s is %s, expected %s\n",
idx, property, path, result, string);
}
int main(int argc, char *argv[])
{
void *fdt;
if (argc != 2)
CONFIG("Usage: %s <dtb file>\n", argv[0]);
test_init(argc, argv);
fdt = load_blob(argv[1]);
check_expected_failure(fdt, "/", "#address-cells");
check_expected_failure(fdt, "/", "#size-cells");
check_string_count(fdt, "/", "compatible", 1);
check_string_count(fdt, "/device", "compatible", 2);
check_string_count(fdt, "/device", "big-endian", 0);
check_string_index(fdt, "/", "compatible", "test-strings", 0);
check_string_index(fdt, "/device", "compatible", "foo", 0);
check_string_index(fdt, "/device", "compatible", "bar", 1);
check_string_index(fdt, "/device", "big-endian", "baz", -1);
check_string(fdt, "/", "compatible", 0, "test-strings");
check_string(fdt, "/device", "compatible", 0, "foo");
check_string(fdt, "/device", "compatible", 1, "bar");
PASS();
}
|
