1 | /* BZ #22679 getcwd(3) should not succeed without returning an absolute path. |
2 | |
3 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either |
9 | version 2.1 of the License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <errno.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <support/check.h> |
24 | #include <support/namespace.h> |
25 | #include <support/support.h> |
26 | #include <support/temp_file.h> |
27 | #include <support/test-driver.h> |
28 | #include <support/xunistd.h> |
29 | #include <unistd.h> |
30 | |
31 | static char *chroot_dir; |
32 | |
33 | /* The actual test. Run it in a subprocess, so that the test harness |
34 | can remove the temporary directory in --direct mode. */ |
35 | static void |
36 | getcwd_callback (void *closure) |
37 | { |
38 | xchroot (path: chroot_dir); |
39 | |
40 | errno = 0; |
41 | char *cwd = getcwd (NULL, size: 0); |
42 | TEST_COMPARE (errno, ENOENT); |
43 | TEST_VERIFY (cwd == NULL); |
44 | |
45 | errno = 0; |
46 | cwd = realpath (name: "." , NULL); |
47 | TEST_COMPARE (errno, ENOENT); |
48 | TEST_VERIFY (cwd == NULL); |
49 | |
50 | _exit (0); |
51 | } |
52 | |
53 | static int |
54 | do_test (void) |
55 | { |
56 | support_become_root (); |
57 | if (!support_can_chroot ()) |
58 | return EXIT_UNSUPPORTED; |
59 | |
60 | chroot_dir = support_create_temp_directory (base: "tst-getcwd-abspath-" ); |
61 | support_isolate_in_subprocess (callback: getcwd_callback, NULL); |
62 | |
63 | return 0; |
64 | } |
65 | |
66 | #include <support/test-driver.c> |
67 | |