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0ad926f3 | 1 | /* Test setgroups as root and in the presence of threads (Bug 26248) |
2b778ceb | 2 | Copyright (C) 2020-2021 Free Software Foundation, Inc. |
0ad926f3 L |
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, start_routine, NULL); | |
50 | ||
51 | size = getgroups (sizeof (list) / sizeof (list[0]), list); | |
52 | if (size < 0) | |
53 | { | |
54 | status = EXIT_FAILURE; | |
55 | error (0, errno, "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 (0, errno, "setgroups failed"); | |
65 | } | |
66 | } | |
67 | ||
68 | if (status == EXIT_SUCCESS && setgroups (0, list) < 0) | |
69 | { | |
70 | status = EXIT_FAILURE; | |
71 | error (0, errno, "setgroups failed"); | |
72 | } | |
73 | ||
74 | xpthread_join (thread); | |
75 | ||
76 | return status; | |
77 | } | |
78 | ||
79 | #include <support/test-driver.c> |