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1 | /* Copyright (C) 1997-2019 Free Software Foundation, Inc. |
---|---|
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <signal.h> |
20 | #include <string.h> /* Needed for string function builtin redirection. */ |
21 | #include <unistd.h> |
22 | |
23 | #include <sysdep.h> |
24 | #include <sys/syscall.h> |
25 | |
26 | #include <nptl/pthreadP.h> /* SIGCANCEL, SIGSETXID */ |
27 | |
28 | |
29 | /* Get and/or change the set of blocked signals. */ |
30 | int |
31 | __sigprocmask (int how, const sigset_t *set, sigset_t *oset) |
32 | { |
33 | sigset_t local_newmask; |
34 | |
35 | /* The only thing we have to make sure here is that SIGCANCEL and |
36 | SIGSETXID are not blocked. */ |
37 | if (set != NULL |
38 | && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) |
39 | || __builtin_expect (__sigismember (set, SIGSETXID), 0))) |
40 | { |
41 | local_newmask = *set; |
42 | __sigdelset (&local_newmask, SIGCANCEL); |
43 | __sigdelset (&local_newmask, SIGSETXID); |
44 | set = &local_newmask; |
45 | } |
46 | |
47 | return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8); |
48 | } |
49 | libc_hidden_def (__sigprocmask) |
50 | weak_alias (__sigprocmask, sigprocmask) |
51 |
Warning: That file was not part of the compilation database. It may have many parsing errors.