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
|
/* Tests of renameat.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake <ebb9@byu.net>, 2009. */
#include <config.h>
#include <stdio.h>
#include "signature.h"
SIGNATURE_CHECK (renameat, int, (int, char const *, int, char const *));
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "filenamecat.h"
#include "ignore-value.h"
#include "macros.h"
#define BASE "test-renameat.t"
#include "test-rename.h"
static int dfd1 = AT_FDCWD;
static int dfd2 = AT_FDCWD;
/* Wrapper to test renameat like rename. */
static int
do_rename (char const *name1, char const *name2)
{
return renameat (dfd1, name1, dfd2, name2);
}
int
main (void)
{
int i;
int dfd;
char *cwd;
int result;
/* Clean up any trash from prior testsuite runs. */
ignore_value (system ("rm -rf " BASE "*"));
/* Test behaviour for invalid file descriptors. */
{
errno = 0;
ASSERT (renameat (-1, "foo", AT_FDCWD, "bar") == -1);
ASSERT (errno == EBADF);
}
{
close (99);
errno = 0;
ASSERT (renameat (99, "foo", AT_FDCWD, "bar") == -1);
ASSERT (errno == EBADF);
}
ASSERT (close (creat (BASE "oo", 0600)) == 0);
{
errno = 0;
ASSERT (renameat (AT_FDCWD, BASE "oo", -1, "bar") == -1);
ASSERT (errno == EBADF);
}
{
errno = 0;
ASSERT (renameat (AT_FDCWD, BASE "oo", 99, "bar") == -1);
ASSERT (errno == EBADF);
}
ASSERT (unlink (BASE "oo") == 0);
/* Test basic rename functionality, using current directory. */
result = test_rename (do_rename, false);
dfd1 = open (".", O_RDONLY);
ASSERT (0 <= dfd1);
ASSERT (test_rename (do_rename, false) == result);
dfd2 = dfd1;
ASSERT (test_rename (do_rename, false) == result);
dfd1 = AT_FDCWD;
ASSERT (test_rename (do_rename, false) == result);
ASSERT (close (dfd2) == 0);
/* Create locations to manipulate. */
ASSERT (mkdir (BASE "sub1", 0700) == 0);
ASSERT (mkdir (BASE "sub2", 0700) == 0);
dfd = creat (BASE "00", 0600);
ASSERT (0 <= dfd);
ASSERT (close (dfd) == 0);
cwd = getcwd (NULL, 0);
ASSERT (cwd);
dfd = open (BASE "sub1", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (chdir (BASE "sub2") == 0);
/* There are 16 possible scenarios, based on whether an fd is
AT_FDCWD or real, and whether a file is absolute or relative.
To ensure that we test all of the code paths (rather than
triggering early normalization optimizations), we use a loop to
repeatedly rename a file in the parent directory, use an fd open
on subdirectory 1, all while executing in subdirectory 2; all
relative names are thus given with a leading "../". Finally, the
last scenario (two relative paths given, neither one AT_FDCWD)
has two paths, based on whether the two fds are equivalent, so we
do the other variant after the loop. */
for (i = 0; i < 16; i++)
{
int fd1 = (i & 8) ? dfd : AT_FDCWD;
char *file1 = file_name_concat ((i & 4) ? ".." : cwd, BASE "xx", NULL);
int fd2 = (i & 2) ? dfd : AT_FDCWD;
char *file2 = file_name_concat ((i & 1) ? ".." : cwd, BASE "xx", NULL);
ASSERT (sprintf (strchr (file1, '\0') - 2, "%02d", i) == 2);
ASSERT (sprintf (strchr (file2, '\0') - 2, "%02d", i + 1) == 2);
ASSERT (renameat (fd1, file1, fd2, file2) == 0);
free (file1);
free (file2);
}
dfd2 = open ("..", O_RDONLY);
ASSERT (0 <= dfd2);
ASSERT (renameat (dfd, "../" BASE "16", dfd2, BASE "17") == 0);
ASSERT (close (dfd2) == 0);
/* Now we change back to the parent directory, and set dfd to ".";
using dfd in remaining tests will expose any bugs if emulation
via /proc/self/fd doesn't check for empty names. */
ASSERT (chdir ("..") == 0);
ASSERT (close (dfd) == 0);
dfd = open (".", O_RDONLY);
ASSERT (0 <= dfd);
ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub1", dfd, BASE "sub2") == -1);
ASSERT (errno == EEXIST || errno == ENOTEMPTY);
ASSERT (unlink (BASE "sub2/file") == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1/.") == -1);
ASSERT (errno == EINVAL || errno == EISDIR || errno == EBUSY
|| errno == ENOTEMPTY || errno == EEXIST
|| errno == ENOENT /* WSL */);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2/.", dfd, BASE "sub1") == -1);
ASSERT (errno == EINVAL || errno == EBUSY || errno == EEXIST
|| errno == ENOENT /* WSL */);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, BASE "sub1") == -1);
ASSERT (errno == EISDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "nosuch", dfd, BASE "18") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, "", dfd, BASE "17") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, "") == -1);
ASSERT (errno == ENOENT);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "17") == -1);
ASSERT (errno == ENOTDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "17/", dfd, BASE "18") == -1);
ASSERT (errno == ENOTDIR);
errno = 0;
ASSERT (renameat (dfd, BASE "17", dfd, BASE "18/") == -1);
ASSERT (errno == ENOTDIR || errno == ENOENT);
/* Finally, make sure we can overwrite existing files. */
ASSERT (close (creat (BASE "sub2/file", 0600)) == 0);
errno = 0;
ASSERT (renameat (dfd, BASE "sub2", dfd, BASE "sub1") == 0);
ASSERT (renameat (dfd, BASE "sub1/file", dfd, BASE "17") == 0);
/* Cleanup. */
ASSERT (close (dfd) == 0);
errno = 0;
ASSERT (unlink (BASE "sub1/file") == -1);
ASSERT (errno == ENOENT);
ASSERT (unlink (BASE "17") == 0);
ASSERT (rmdir (BASE "sub1") == 0);
errno = 0;
ASSERT (rmdir (BASE "sub2") == -1);
ASSERT (errno == ENOENT);
free (cwd);
if (result)
fputs ("skipping test: symlinks not supported on this file system\n",
stderr);
return result;
}
|
