1 /* Copyright (C) 2002-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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 <http://www.gnu.org/licenses/>. */
26 pthread_sigmask (int how
, const sigset_t
*newmask
, sigset_t
*oldmask
)
28 sigset_t local_newmask
;
30 /* The only thing we have to make sure here is that SIGCANCEL and
31 SIGSETXID is not blocked. */
33 && (__builtin_expect (__sigismember (newmask
, SIGCANCEL
), 0)
34 || __builtin_expect (__sigismember (newmask
, SIGSETXID
), 0)))
36 local_newmask
= *newmask
;
37 __sigdelset (&local_newmask
, SIGCANCEL
);
38 __sigdelset (&local_newmask
, SIGSETXID
);
39 newmask
= &local_newmask
;
42 #ifdef INTERNAL_SYSCALL
43 /* We know that realtime signals are available if NPTL is used. */
44 INTERNAL_SYSCALL_DECL (err
);
45 int result
= INTERNAL_SYSCALL (rt_sigprocmask
, err
, 4, how
, newmask
,
48 return (INTERNAL_SYSCALL_ERROR_P (result
, err
)
49 ? INTERNAL_SYSCALL_ERRNO (result
, err
)
52 return sigprocmask (how
, newmask
, oldmask
) == -1 ? errno
: 0;