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1 | /* Test that sigprocmask does not read from the unused part of jmpbuf. | |
2 | Copyright (C) 2017-2019 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 <signal.h> | |
21 | #include <string.h> | |
22 | #include <errno.h> | |
23 | #include <setjmpP.h> | |
24 | #include <support/next_to_fault.h> | |
25 | ||
26 | #define SIZEOF_SIGSET_T sizeof (__jmp_buf_sigset_t) | |
27 | ||
28 | static int | |
29 | do_test (void) | |
30 | { | |
31 | sigjmp_buf sj; | |
32 | struct support_next_to_fault sigset_t_buf | |
33 | = support_next_to_fault_allocate (SIZEOF_SIGSET_T); | |
34 | sigset_t *m_p = (sigset_t *) sigset_t_buf.buffer; | |
35 | sigset_t m; | |
36 | ||
37 | sigemptyset (&m); | |
38 | memcpy (m_p, &m, SIZEOF_SIGSET_T); | |
39 | sigprocmask (SIG_SETMASK, m_p, NULL); | |
40 | memcpy (&m, m_p, SIZEOF_SIGSET_T); | |
41 | if (sigsetjmp (sj, 0) == 0) | |
42 | { | |
43 | sigaddset (&m, SIGUSR1); | |
44 | memcpy (m_p, &m, SIZEOF_SIGSET_T); | |
45 | sigprocmask (SIG_SETMASK, m_p, NULL); | |
46 | memcpy (&m, m_p, SIZEOF_SIGSET_T); | |
47 | siglongjmp (sj, 1); | |
48 | return EXIT_FAILURE; | |
49 | } | |
50 | sigprocmask (SIG_SETMASK, NULL, m_p); | |
51 | memcpy (&m, m_p, SIZEOF_SIGSET_T); | |
52 | return sigismember (&m, SIGUSR1) ? EXIT_SUCCESS : EXIT_FAILURE; | |
53 | } | |
54 | ||
55 | #include <support/test-driver.c> |