1 | /* Test setgroups as root and in the presence of threads (Bug 26248) |
2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stdlib.h> |
20 | #include <limits.h> |
21 | #include <grp.h> |
22 | #include <errno.h> |
23 | #include <error.h> |
24 | #include <support/xthread.h> |
25 | #include <support/support.h> |
26 | #include <support/test-driver.h> |
27 | #include <support/xunistd.h> |
28 | |
29 | /* The purpose of this test is to test the setgroups API as root and in |
30 | the presence of threads. Once we create a thread the setgroups |
31 | implementation must ensure that all threads are set to the same |
32 | group and this operation should not fail. Lastly we test setgroups |
33 | with a zero sized group and a bad address and verify we get EPERM. */ |
34 | |
35 | static void * |
36 | start_routine (void *args) |
37 | { |
38 | return NULL; |
39 | } |
40 | |
41 | static int |
42 | do_test (void) |
43 | { |
44 | int size; |
45 | /* NB: Stack address can be at 0xfffXXXXX on 32-bit OSes. */ |
46 | gid_t list[NGROUPS_MAX]; |
47 | int status = EXIT_SUCCESS; |
48 | |
49 | pthread_t thread = xpthread_create (NULL, thread_func: start_routine, NULL); |
50 | |
51 | size = getgroups (size: sizeof (list) / sizeof (list[0]), list: list); |
52 | if (size < 0) |
53 | { |
54 | status = EXIT_FAILURE; |
55 | error (status: 0, errno, format: "getgroups failed" ); |
56 | } |
57 | if (setgroups (size, list) < 0) |
58 | { |
59 | if (errno == EPERM) |
60 | status = EXIT_UNSUPPORTED; |
61 | else |
62 | { |
63 | status = EXIT_FAILURE; |
64 | error (status: 0, errno, format: "setgroups failed" ); |
65 | } |
66 | } |
67 | |
68 | if (status == EXIT_SUCCESS && setgroups (0, list) < 0) |
69 | { |
70 | status = EXIT_FAILURE; |
71 | error (status: 0, errno, format: "setgroups failed" ); |
72 | } |
73 | |
74 | xpthread_join (thr: thread); |
75 | |
76 | return status; |
77 | } |
78 | |
79 | #include <support/test-driver.c> |
80 | |