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
|
// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for fdt_supernode_atdepth_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 path_depth(const char *path)
{
const char *p;
int depth = 0;
if (path[0] != '/')
TEST_BUG();
if (strcmp(path, "/") == 0)
return 0;
for (p = path; *p; p++)
if (*p == '/')
depth++;
/* Special case for path == "/" */
if (p == (path + 1))
return 0;
else
return depth;
}
static int path_prefix(const char *path, int depth)
{
const char *p;
int i;
if (path[0] != '/')
TEST_BUG();
if (depth == 0)
return 1;
p = path;
for (i = 0; i < depth; i++)
p = p+1 + strcspn(p+1, "/");
return p - path;
}
static void check_supernode_atdepth(struct fdt_header *fdt, const char *path,
int depth)
{
int pdepth = path_depth(path);
char *superpath;
int nodeoffset, supernodeoffset, superpathoffset, pathprefixlen;
int nodedepth;
pathprefixlen = path_prefix(path, depth);
superpath = alloca(pathprefixlen + 1);
strncpy(superpath, path, pathprefixlen);
superpath[pathprefixlen] = '\0';
verbose_printf("Path %s (%d), depth %d, supernode is %s\n",
path, pdepth, depth, superpath);
nodeoffset = fdt_path_offset(fdt, path);
if (nodeoffset < 0)
FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset));
superpathoffset = fdt_path_offset(fdt, superpath);
if (superpathoffset < 0)
FAIL("fdt_path_offset(%s): %s", superpath,
fdt_strerror(superpathoffset));
supernodeoffset = fdt_supernode_atdepth_offset(fdt, nodeoffset,
depth, &nodedepth);
if (supernodeoffset < 0)
FAIL("fdt_supernode_atdepth_offset(): %s",
fdt_strerror(supernodeoffset));
if (supernodeoffset != superpathoffset)
FAIL("fdt_supernode_atdepth_offset() returns %d instead of %d",
supernodeoffset, superpathoffset);
if (nodedepth != pdepth)
FAIL("fdt_supernode_atdept_offset() returns node depth %d "
"instead of %d", nodedepth, pdepth);
}
static void check_supernode_overdepth(struct fdt_header *fdt, const char *path)
{
int pdepth = path_depth(path);
int nodeoffset, err;
nodeoffset = fdt_path_offset(fdt, path);
if (nodeoffset < 0)
FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset));
err = fdt_supernode_atdepth_offset(fdt, nodeoffset, pdepth + 1, NULL);
if (err != -FDT_ERR_NOTFOUND)
FAIL("fdt_supernode_atdept_offset(%s, %d) returns %d instead "
"of FDT_ERR_NOTFOUND", path, pdepth+1, err);
}
static void check_path(struct fdt_header *fdt, const char *path)
{
int i;
for (i = 0; i <= path_depth(path); i++)
check_supernode_atdepth(fdt, path, i);
check_supernode_overdepth(fdt, path);
}
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();
}
|