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568035b7 | 1 | /* Copyright (C) 2002-2013 Free Software Foundation, Inc. |
76a50749 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
76a50749 | 18 | |
6291ee3c | 19 | #include <errno.h> |
76a50749 UD |
20 | #include <signal.h> |
21 | #include <pthreadP.h> | |
6291ee3c | 22 | #include <sysdep.h> |
76a50749 UD |
23 | |
24 | ||
25 | int | |
26 | pthread_sigmask (how, newmask, oldmask) | |
27 | int how; | |
28 | const sigset_t *newmask; | |
29 | sigset_t *oldmask; | |
30 | { | |
31 | sigset_t local_newmask; | |
32 | ||
53b4fed6 UD |
33 | /* The only thing we have to make sure here is that SIGCANCEL and |
34 | SIGSETXID is not blocked. */ | |
e7608d77 | 35 | if (newmask != NULL |
53b4fed6 UD |
36 | && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0) |
37 | || __builtin_expect (__sigismember (newmask, SIGSETXID), 0))) | |
76a50749 | 38 | { |
e7608d77 UD |
39 | local_newmask = *newmask; |
40 | __sigdelset (&local_newmask, SIGCANCEL); | |
53b4fed6 | 41 | __sigdelset (&local_newmask, SIGSETXID); |
e7608d77 | 42 | newmask = &local_newmask; |
76a50749 UD |
43 | } |
44 | ||
6291ee3c | 45 | #ifdef INTERNAL_SYSCALL |
f78deea6 | 46 | /* We know that realtime signals are available if NPTL is used. */ |
6aca81bb UD |
47 | INTERNAL_SYSCALL_DECL (err); |
48 | int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask, | |
49 | oldmask, _NSIG / 8); | |
6291ee3c | 50 | |
6aca81bb UD |
51 | return (INTERNAL_SYSCALL_ERROR_P (result, err) |
52 | ? INTERNAL_SYSCALL_ERRNO (result, err) | |
6291ee3c UD |
53 | : 0); |
54 | #else | |
f78deea6 | 55 | return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0; |
6291ee3c | 56 | #endif |
76a50749 | 57 | } |