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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/* Test program for returning the canonical absolute name of a given file.
Copyright (C) 1996,1997,2000,2002,2004,2005,2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger <davidm@azstarnet.com>.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* This file must be run from within a directory called "stdlib". */
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
/* Prototype for our test function. */
extern int do_test (int argc, char *argv[]);
#include <test-skeleton.c>
#ifndef PATH_MAX
# define PATH_MAX 4096
#endif
static char cwd[PATH_MAX];
static size_t cwd_len;
struct {
const char * name;
const char * value;
} symlinks[] = {
{"SYMLINK_LOOP", "SYMLINK_LOOP"},
{"SYMLINK_1", "."},
{"SYMLINK_2", "//////./../../etc"},
{"SYMLINK_3", "SYMLINK_1"},
{"SYMLINK_4", "SYMLINK_2"},
{"SYMLINK_5", "doesNotExist"},
};
struct {
const char * in, * out, * resolved;
int error;
} tests[] = {
/* 0 */
{"/", "/"},
{"/////////////////////////////////", "/"},
{"/.././.././.././..///", "/"},
{"/etc", "/etc"},
{"/etc/../etc", "/etc"},
/* 5 */
{"/doesNotExist/../etc", 0, "/doesNotExist", ENOENT},
{"./././././././././.", "."},
{"/etc/.//doesNotExist", 0, "/etc/doesNotExist", ENOENT},
{"./doesExist", "./doesExist"},
{"./doesExist/", "./doesExist"},
/* 10 */
{"./doesExist/../doesExist", "./doesExist"},
{"foobar", 0, "./foobar", ENOENT},
{".", "."},
{"./foobar", 0, "./foobar", ENOENT},
{"SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
/* 15 */
{"./SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
{"SYMLINK_1", "."},
{"SYMLINK_1/foobar", 0, "./foobar", ENOENT},
{"SYMLINK_2", "/etc"},
{"SYMLINK_3", "."},
/* 20 */
{"SYMLINK_4", "/etc"},
{"../stdlib/SYMLINK_1", "."},
{"../stdlib/SYMLINK_2", "/etc"},
{"../stdlib/SYMLINK_3", "."},
{"../stdlib/SYMLINK_4", "/etc"},
/* 25 */
{"./SYMLINK_5", 0, "./doesNotExist", ENOENT},
{"SYMLINK_5", 0, "./doesNotExist", ENOENT},
{"SYMLINK_5/foobar", 0, "./doesNotExist", ENOENT},
{"doesExist/../../stdlib/doesExist", "./doesExist"},
{"doesExist/.././../stdlib/.", "."},
/* 30 */
{"./doesExist/someFile/", 0, "./doesExist/someFile", ENOTDIR},
{"./doesExist/someFile/..", 0, "./doesExist/someFile", ENOTDIR},
};
static int
check_path (const char * result, const char * expected)
{
int good;
if (!result)
return (expected == NULL);
if (!expected)
return 0;
if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0'))
good = (strncmp (result, cwd, cwd_len) == 0
&& strcmp (result + cwd_len, expected + 1) == 0);
else
good = (strcmp (expected, result) == 0);
return good;
}
int
do_test (int argc, char ** argv)
{
char * result;
int i, errors = 0;
char buf[PATH_MAX];
getcwd (cwd, sizeof(buf));
cwd_len = strlen (cwd);
errno = 0;
if (realpath (NULL, buf) != NULL || errno != EINVAL)
{
printf ("%s: expected return value NULL and errno set to EINVAL"
" for realpath(NULL,...)\n", argv[0]);
++errors;
}
#if 0
/* This is now allowed. The test is invalid. */
errno = 0;
if (realpath ("/", NULL) != NULL || errno != EINVAL)
{
printf ("%s: expected return value NULL and errno set to EINVAL"
" for realpath(...,NULL)\n", argv[0]);
++errors;
}
#endif
errno = 0;
if (realpath ("", buf) != NULL || errno != ENOENT)
{
printf ("%s: expected return value NULL and set errno to ENOENT"
" for realpath(\"\",...)\n", argv[0]);
++errors;
}
for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
symlink (symlinks[i].value, symlinks[i].name);
int has_dir = mkdir ("doesExist", 0777) == 0;
int fd = has_dir ? creat ("doesExist/someFile", 0777) : -1;
for (i = 0; i < (int) (sizeof (tests) / sizeof (tests[0])); ++i)
{
buf[0] = '\0';
result = realpath (tests[i].in, buf);
if (!check_path (result, tests[i].out))
{
printf ("%s: flunked test %d (expected `%s', got `%s')\n",
argv[0], i, tests[i].out ? tests[i].out : "NULL",
result ? result : "NULL");
++errors;
continue;
}
if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved))
{
printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n",
argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved,
buf);
++errors;
continue;
}
if (!tests[i].out && errno != tests[i].error)
{
printf ("%s: flunked test %d (expected errno %d, got %d)\n",
argv[0], i, tests[i].error, errno);
++errors;
continue;
}
char *result2 = realpath (tests[i].in, NULL);
if ((result2 == NULL && result != NULL)
|| (result2 != NULL && strcmp (result, result2) != 0))
{
printf ("\
%s: realpath(..., NULL) produced different result than realpath(..., buf): '%s' vs '%s'\n",
argv[0], result2, result);
++errors;
}
free (result2);
}
getcwd (buf, sizeof(buf));
if (strcmp (buf, cwd))
{
printf ("%s: current working directory changed from %s to %s\n",
argv[0], cwd, buf);
++errors;
}
if (fd >= 0)
{
close (fd);
unlink ("doesExist/someFile");
}
if (has_dir)
rmdir ("doesExist");
for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
unlink (symlinks[i].name);
if (errors != 0)
{
printf ("%d errors.\n", errors);
return EXIT_FAILURE;
}
puts ("No errors.");
return EXIT_SUCCESS;
}
|
