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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/* Test of getcwd function.
Copyright (C) 2000-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <libc-diag.h>
#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
char thepath[4096]; /* Yes, this limits the environment this test
can run it but I honestly don't care about
people which have this problem. */
char *bufs[10];
size_t lens[10];
size_t sbs;
size_t len, i;
if (getcwd (thepath, sizeof thepath) == NULL)
{
if (errno == ERANGE)
/* The path is too long, skip all tests. */
return 0;
puts ("getcwd (thepath, sizeof thepath) failed");
return 1;
}
len = strlen (thepath);
sbs = 1;
while (sbs < len + 1)
sbs <<= 1;
for (i = 0; i < 4; ++i)
{
lens[i] = sbs;
bufs[i] = (char *) malloc (sbs);
}
/* Avoid warnings about the first argument being null when the second
is nonzero. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull");
bufs[i] = getcwd (NULL, sbs);
DIAG_POP_NEEDS_COMMENT;
lens[i] = sbs;
if (bufs[i] == NULL)
{
puts ("getcwd (NULL, sbs) failed");
return 1;
}
++i;
for (; i < 10; sbs >>= 1, ++i)
{
bufs[i] = (char *) malloc (MAX (1, sbs));
lens[i] = sbs;
}
/* Before we test the result write something in the memory to see
whether the allocation went right. */
for (i = 0; i < 10; ++i)
if (i != 4 && bufs[i] != NULL)
memset (bufs[i], '\xff', lens[i]);
if (strcmp (thepath, bufs[4]) != 0)
{
printf ("\
getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n",
bufs[4], thepath);
return 1;
}
/* Now overwrite all buffers to see that getcwd allocated the buffer
of right size. */
for (i = 0; i < 10; ++i)
memset (bufs[i], i, lens[i]);
for (i = 0; i < 10; ++i)
free (bufs[i]);
/* Test whether the function signals success despite the buffer
being too small.
Avoid warnings about the first argument being null when the second
is nonzero. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull");
if (getcwd (NULL, len) != NULL)
{
puts ("getcwd (NULL, len) didn't failed");
return 1;
}
DIAG_POP_NEEDS_COMMENT;
bufs[0] = malloc (len);
bufs[1] = malloc (len);
bufs[2] = malloc (len);
if (bufs[1] != NULL)
{
if (getcwd (bufs[1], len) != NULL)
{
puts ("getcwd (bufs[1], len) didn't failed");
return 1;
}
free (bufs[0]);
free (bufs[1]);
free (bufs[2]);
}
memset (thepath, '\xfe', sizeof (thepath));
if (getcwd (thepath, len) != NULL)
{
puts ("getcwd (thepath, len) didn't failed");
return 1;
}
for (i = len; i < sizeof thepath; ++i)
if (thepath[i] != '\xfe')
{
puts ("thepath[i] != '\xfe'");
return 1;
}
/* Now test handling of correctly sized buffers.
Again. avoid warnings about the first argument being null when
the second is nonzero. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull");
bufs[0] = getcwd (NULL, len + 1);
if (bufs[0] == NULL)
{
puts ("getcwd (NULL, len + 1) failed");
return 1;
}
DIAG_POP_NEEDS_COMMENT;
free (bufs[0]);
memset (thepath, '\xff', sizeof thepath);
if (getcwd (thepath, len + 1) == NULL)
{
puts ("getcwd (thepath, len + 1) failed");
return 1;
}
for (i = len + 1; i < sizeof thepath; ++i)
if (thepath[i] != '\xff')
{
printf ("thepath[%zd] != '\xff'\n", i);
return 1;
}
puts ("everything OK");
return 0;
}
#include "../test-skeleton.c"
|
